午夜福利总站-午夜国产-午夜国产爆乳-午夜国产传媒-午夜国产大片-午夜国产福利片-午夜国产福利在线-午夜国产精品福利-午夜国产精品视频-午夜国产理伦

moda

'Its strength is its simplicity' The benefits of cleaning with vinegar.txt

epcnwc

13 Oct 2025(atualizado 13/10/2025 às 00h54)

'Its strength is its simplicity': The benefits of cleaning with vinegarSkip to contentBritish Broadc

Temas

Compartilhe

Petrobras já reduziu emiss?es de metano em 70%, além de 40% dos gases de efeito estufa Energia em Transi??o Valor Econ?mico.txt'Its strength is its simplicity' The benefits of cleaning with vinegar.txt

'Its strength is its simplicity' The benefits of cleaning with vinegar.txt

'Its strength is lottery affiliateits simplicity': The benefits of cleaning with vinegarSkip to contentBritish Broadcasting CorporationRegisterSign InHomeNewsSportBusinessInnovationCultureArtsTravelEarthAudioVideoLiveHomeNewsIsrael-Gaza WarWar in UkraineUS & CanadaUKUK PoliticsEnglandN. IrelandN. Ireland PoliticsScotlandScotland PoliticsWalesWales PoliticsAfricaAsiaChinaIndiaAustraliaEuropeLatin AmericaMiddle EastIn PicturesBBC InDepthBBC VerifySportBusinessExecutive LoungeTechnology of BusinessFuture of BusinessInnovationTechnologyScience & HealthArtificial IntelligenceAI v the MindCultureFilm & TVMusicArt & DesignStyleBooksEntertainment NewsArtsArts in MotionTravelDestinationsAfricaAntarcticaAsiaAustralia and PacificCaribbean & BermudaCentral AmericaEuropeMiddle EastNorth AmericaSouth AmericaWorld’s TableCulture & ExperiencesAdventuresThe SpeciaListTo the Ends of The Earth EarthNatural WondersWeather & ScienceClimate SolutionsSustainable BusinessGreen LivingAudioPodcast CategoriesRadioAudio FAQsVideoLiveLive NewsLive SportHomeNewsSportBusinessInnovationCultureArtsTravelEarthAudioVideoLiveWeatherNewsletters'Its strength is its simplicity': The benefits of cleaning with vinegar24 April 2025ShareSaveKatarina ZimmerShareSaveGetty Images(Credit: Getty Images)Katarina Zimmer put vinegar to the test as a cleaning product and discovered a wide range of benefits, for people and the planet.A few months ago in my new Berlin apartment, my toilet and I were at war. No amount of scrubbing or toilet cleaner would evict the limescale coating inside. Frustrated, I turned to Google and stumbled across a page recommending vinegar – something that the previous inhabitant had left behind in abundance. After dropping two tablespoons full of "Essigessenz" – essentially concentrated vinegar – into the toilet and waiting for half an hour, I scrubbed and the limescale came off in a moment. Since then, I've enthusiastically used vinegar to rid my world of limescale. I've found it even more effective than my regular kitchen spray cleaner for getting my sink sparkling. That includes the faucet, which I wrapped in a vinegar-soaked kitchen tissue – whereas my regular cleaning spray dribbled off. And rather than having to buy special tablets to clean my limescale-smothered glass kettle, I simply poured two tablespoons of concentrated vinegar inside and boiled it. As the limescale crackled off, it made a satisfying sizzling sound.I wondered if vinegar had other advantages. Did it also kill off bacteria and other germs? And, importantly, was this simple, natural product better for the environment and for my health than regular cleaning products? The internet is full of sustainability influencers and green cleaning blogs that advertise vinegar as a jack-of-all-trades and a safer and "greener" alternative to "toxic" cleaning products. These claims make sense on the surface; vinegar is after all just fermented alcohol and has long been used as a food preservative, in salad dressings, as well as a household cleaner – but I wanted evidence. After interviewing three experts, I learned that while some of these claims are true, the benefits of vinegar depend a lot on how it's used and the kind of grime you're trying to get rid of.Getty ImagesLimescale dissolves more easily in acidic fluids like vinegar (Credit: Getty Images)Reassuringly, Eric Beckman, a chemical engineer and emeritus professor at the University of Pittsburgh in Pennsylvania, told me that the best cleaning use for acetic acid – the main component of vinegar – is exactly what I had been using it for: as a descaler. Limescale – and rust, for that matter – consists of certain ions that dissolve more easily in acidic fluids like vinegar, he says. Beckman uses vinegar himself to get limescale off mirrors, while the microbiologist Dirk Bockmühl of Germany's Rhine-Waal University of Applied Sciences prefers using lemon juice, which contains citric acid, which he says is a more effective descaler and smells better. (Read more about why vinegar is such an effective cleaner.)That said, vinegar doesn't work on everything. Beckman says that soap does a better job at removing oily films on dishes, while baking soda is effective against processed oils that have stuck onto surfaces while cooking. (Read more about whether baking soda is environmentally friendly).However, Beckman expresses exasperation about a popular remedy of mixing vinegar together with baking soda. The mixture is chemically quite useless, he says, as the acid of vinegar and the base of baking soda effectively cancel each other out. "I use both, but not together," says Beckman. "Together, they give you nothing."   And while vinegar is often touted as a powerful antimicrobial, Bockmühl says, the truth is more nuanced. In a 2020 study, Bockmühl and his colleagues put vinegar to the test against a selection of disease-causing bacteria, viruses and fungi. While many internet recommendations suggest adding a dash of vinegar into a bucket of water for cleaning, Bockmühl found that its anti-microbial effects only kick in at an acetic acid concentration of 5% – its concentration in pure vinegar. And it was only fully effective at distilled concentrations of 10%  – to which the researchers added a dash of citric acid – in killing off five common bacteria, including Escherichia coli and Staphylococcus aureus, as well as a mould, a yeast and a weakened strain of the vaccinia virus. Other studies have found that similar concentrations also work against Sars-CoV-2, the virus that causes Covid-19.  But even these concentrations didn't work against the MRSA bacterium, an especially stubborn strain of Staphylococcus aureus that's resistant to certain antibiotics, while countless bacteria remain untested. Many bacteria – including the ones that ferment alcohol into vinegar – thrive in acids, Beckman adds: "Then they'll be like, 'ooh, yay, vinegar.'" Some moulds, too, are resistant to acetic acid while some viruses – like norovirus – might be, too, Bockmühl suspects. Beckman says that soaps are more effective against bacteria, while standard disinfectants work better against viruses and moulds. Harsh treatments like bleach will definitely kill everything, Beckman says – although bleach can be unsafe if used incorrectly.Getty ImagesVinegar is less effective against processed oils that have stuck onto surfaces during cooking (Credit: Getty Images)Bockmühl stresses that, even for the germs that vinegar does kill, a relatively high concentration is needed. The concentration won't be adequate "if you just put a teaspoon of vinegar into your cleaning solution", Bockmühl says. However, the higher the dose of acetic acid, the more irritating it can be on the skin, he adds. It is harmful if it gets into your eyes. Surfaces can suffer, too: vinegar corrodes natural stone and metals like copper, bronze and brass, according to the Italian chemist Dario Bressanini's book The Science of Cleaning. And in dishwashers or washing machines, it can harm the rubber gaskets used to seal them, while it could also damage coffee machines and strip away the coating on tiles and grout, Bressanini writes. But Bockmühl assures me that it's fine to use vinegar on glass and ceramic surfaces – like my toilet – and stainless steel sinks.The trouble that Bockmühl sees with using homemade cleaning products is that they don't come with instructions or safety recommendations. "They might be safe if you know what you're doing," he says, "but there are a lot of really stupid and absurd recommendations on the internet".More like this:? Are you cleaning your water bottle enough?? Why you might want to change your bedclothes more often? Seven proven ways to help the planet in 2025 To learn more about how the health risks of vinegar compare with those of conventional cleaners, I called up Nicola Carslaw, professor of indoor air chemistry at the University of York in the UK. Her concern is how cleaners disrupt the air in our homes and buildings. It's known that professional domestic cleaners tend to have higher rates of asthma than other occupational groups, although it's proven difficult to pin that on any single product or ingredient.In a recent study, Carslaw and her colleagues tested 23 different cleaning products including dishwasher fluid, washing up liquid and spray products, and found that many of them released volatile chemical compounds (VOCs). Some of these compounds, like terpenes, are often added to give pleasant aromas, such as lavender or pine oil, but they're highly reactive in the atmosphere. Terpenes for instance, easily react with ozone in the air, creating miniscule particles. In general, inhaling particles of this size has been linked to lung and heart disease."Your nose is a really good filter for the big particles, but the smaller ones can get all the way into your lungs [and] into the bloodstream," Carslaw says. Interestingly, in her study she found that cleaning products marketed as "natural" or "green" didn't seem any healthier in this regard. "The natural/green ones had as many, if not more VOCs as the standard cleaners, and in many cases they were more reactive," she says.Vinegar passes muster on any sustainability scale because it's simple and it's degradable – Eric BeckmanBut vinegar, by contrast, only consists of water and acetic acid (and a few other substances that make the difference between red and wine vinegar, for instance). As such, "it's just not going to be chemically reactive in the same way", Carslaw says. Another advantage of vinegar is that it's usually applied on a cloth to wipe surfaces rather than used as a spray, Carslaw adds. Research shows that cleaning products applied in spray form have more harmful effects on the respiratory system than liquids and wipes. (Read more about the health risks associated with cleaning products in Jessica Bradley's story). "When you spray something, you're turning the chemical into a form that's much easier to breathe [in] than if you have the liquid," Carslaw says. That said, she always advises gloves when there's risk of skin contact, good ventilation and avoiding excessive cleaning, whatever product is used. (Read more about whether we're cleaning too much for our own good).Getty ImagesVinegar quickly breaks down and therefore its environmental impact is low (Credit: Getty Images)This all left me with one remaining question: is using vinegar more environmentally friendly than conventional cleaners? That's a hard question to answer, says Beckman. Ideally, there would be life cycle analyses for cleaning products which track impacts from cradle to grave, tracing each ingredient back to its source, how it's produced, transported, packaged and eventually disposed of. But very few companies do that thoroughly, even if they do brand their products as "green", Beckman says. "But I will say this about vinegar. [Its] strength is its simplicity," Beckman says. Conventional cleaners can consist of more than a dozen different ingredients, many of them industrially manufactured in energy-consuming processes, he says. Acetic acid is born through the natural, yeast-driven fermentation of alcohol, which itself comes from the natural fermentation of sugar. The biggest environmental impact of vinegar-making is where the sugar came from – whether it's grapes, apples, grains, potatoes, or rice – which are largely renewable resources. Bockmühl cautions that this only applies to naturally fermented vinegars, the ones typically sold as food products; there are also synthetic vinegars which are derived from fossil fuels, meaning they come with all the environmentally harmful impacts of oil and gas extraction.  Even at the very end of its life, vinegar has little impact. While many ingredients in soaps are tough molecules and don't easily biodegrade, sometimes continuing to kill organisms once they're in the environment, vinegar quickly breaks down, Beckman says. "Vinegar passes muster on any sustainability scale because it's simple and it's degradable," he says. After discovering all of this, I felt even better about using vinegar. I probably won't rely on it for ridding my surfaces of germs, but I'll keep using it to remove limescale and look forward to trying it out on the next rusty item I find. I'm happy to put up with the smell, knowing that I'm using a sustainable product that's likely better for my health. --For essential climate news and hopeful developments to your inbox, sign up to the Future Earth newsletter, while The Essential List delivers a handpicked selection of features and insights twice a week.For more science, technology, environment and health stories from the BBC, follow us on Facebook, X and Instagram.EarthSustainability on a ShoestringHygieneHealthSustainabilityEnvironmentClimateScienceFeaturesWatchExplaining how a touchscreen works with a sausageBritish mathematician Hannah Fry digs into the science of touchscreens.4 Aug 2025ScienceSeven images that transformed our world viewWatch how the maps and images of our planet from above have changed over the last two millennia.30 Apr 2025EarthTen striking images of an Earth scarred by humansFrom a shipwrecking yard in Bangladesh to a river of iron dioxide in Canada, a deep dive in Ed Burtynsky's work.16 Apr 2025EarthWhat's inside a black hole?Black holes are one of the mysteries of the universe where all the laws of nature as we know them stop working.9 Apr 2025ScienceUsing bubbles to remove forever chemicals from our waterBBC Click visits a UK research team working on a solution to remove toxic chemicals known as PFAS from water.27 Mar 2025ScienceHow sex with Neanderthals changed us foreverWe find out what we gained when Homo sapiens mated with Homo neanderthalensis many thousands of years ago.18 Mar 2025ScienceTheory of Evolution: How did Charles Darwin come up with it?The British naturalist embarked on an extraordinary journey, did hundreds of experiments, and wrote for 20 years.12 Feb 2025ScienceRaja the elephant asking for a road tollIn Sri Lanka, a charming elephant cheekily halts traffic for treats. 29 Jan 2025EarthInside the hidden world of rhino romanceWatch two rhinoceroses involved in a game of 'kiss and chase'.24 Jan 2025EarthThe power of hugs for reducing inflammation in the bodyDr. Lisa Dahlgren discusses the effect human touch has on our health and wellbeing.22 Jan 2025HealthA mother tiger on a fierce hunt to feed her cubsWhile her three offspring take a leisurely bath, this Bengal tiger mother must find food for the entire family.16 Jan 2025EarthHow foxes outsmart world's heaviest raptor in quest for foodWatch red foxes challenge the Steller's sea eagle, the world's heaviest raptor, as they search for food in Japan.8 Jan 2025EarthHomo juluensis: Possible 'new ancient human' identifiedResearchers may have identified a new human species that lived around 300,000 years ago in Asia.6 Jan 2025ScienceMum saves baby seal with a clever trickWatch as David Attenborough reveals the unique behaviour of a mother seal to protect her pup in icy waters.31 Dec 2024EarthHow Arctic communities protect themselves from avalanchesBBC Click finds out how local communities in Svalbard use technology to combat avalanches and heavy snowfall.31 Dec 2024ScienceMountain goats: A death-defying battle to mateWatch the world's largest species of goat fight for the right to mate, teetering on the edge of perilous drops.17 Dec 2024EarthThe near miraculous escape of a cave swiftThe Tam Nam Lod Cave is home to over a quarter of a million swifts. But there are hidden dangers.12 Dec 2024EarthMeet the mudskipper: The remarkable fish that lives on landThe mudskipper is a fish that can leap with a flick of its tail. Watch a particularly agile specimen in action.3 Dec 2024EarthWatch the dramatic escape of tiny fish from deadly sharksThe Moorish idol, a dramatic little fish with dazzling stripes, adopts a clever strategy to save its life.27 Nov 2024EarthEarth tides: Why our planet's crust has tides tooHow do they differ from the ocean? A geophysicist breaks it down for us.28 Sep 2024Weather & scienceMore from the BBC3 hrs agoFarmer, 37, dies after missing out on new treatment Robin Elcock was unable to access new treatment for brain tumours as he did not have the necessary tissue.3 hrs ago4 hrs agoDementia suits show how tricky daily tasks can beThe simulation suits are helping health staff understand the frustration patients face every day.4 hrs ago4 hrs agoBlood cancer treatments come on 'leaps and bounds'A Wiltshire woman, who is now in remission, says new treatments are also much gentler on the body. 4 hrs ago8 hrs agoPostcode lottery for new cancer treatments, doctors warnExperts say bureaucracy is "stifling innovation" and that applying for funding to pay for new treatments can be "cumbersome".8 hrs ago8 hrs agoDr Xand: Stress is normal. Here's how to manage it betterStress, in small doses, can be good for us. Here are five simple, science-backed ways to manage it better. 8 hrs agoBritish Broadcasting CorporationHomeNewsSportBusinessInnovationCultureArtsTravelEarthAudioVideoLiveWeatherBBC ShopBritBoxBBC in other languagesFollow BBC on:Terms of UseAbout the BBCPrivacy PolicyCookiesAccessibility HelpContact the BBCAdvertise with usDo not share or sell my infoBBC.com Help & FAQsContent IndexCopyright 2025 BBC. All rights reserved. The BBC is not responsible for the content of external sites. Read about our approach to external linking. 

NEWSLETTER GRATUITA

Nexo | Hoje

'Sizewell C oak tree felling would be devastating', say residents.txt

País comunista, sem religi?o, China virou o maior impressor mundial de Bíblias.txt entretenimento e os abrangente explorar.

GRáFICOS

nos eixos

'We bought our first home with another couple'.txt

Parlamento derruba premiê e aprofunda crise política na Fran?a Mundo Valor Econ?mico.txt abrangente e os entretenimento abrangente.

Navegue por temas

Petrobras impulsiona inova??o aberta no setor público com modelo de venture clienting Impacting the future Valor Econ?mico.txt Palpite Vasco da Gama x Independiente del Valle - Copa Sul-Americana - 22/07/2025.txt Perder faz parte do jogo e pode trazer boas li??es.txt Para a Alphabet, um remédio agridoce Negócios pipelinevalor.txt People facing homelessness invited to Cromer art exhibition.txt Para Beacraft, generalistas criativos ter?o mais oportunidades Tecnologia bancária Valor Econ?mico.txt Parcerias criam novos usos para resíduos que antes iam para aterros Saneamento Valor Econ?mico.txt Passageiros do Entorno do DF ficam sem ?nibus após anúncio de greve.txt Paris Olympics 2024 Latest news, updates & highlights Sport.txt Papagaio bate recorde mundial por sua incrível rapidez ao identificar cores; veja vídeo Curiosidade Galileu.txt
国模私拍高清大胆 炮战 | 国产高清在线露脸一区 | www.色在线| 国产三级日产三级日本三级 | 男女做哎爱过程图片 | 免费观看色 | 色妞ww精品视频7777 | 性一交一乱一伦一A片 | 亚洲国产35p | 中文无码字慕在线观看 | 免费公开视频人人人人人人人 | 国产极品JK白丝喷白浆免费视频 | 轻点大JI巴太粗太长了A片 | 精品一区二区在线观看 | 99视频有精品视频高清 | gay男打屁股视频网站 | 没有废话全色肉的黄文 | 久久综合一区二区三区 | 天天综合色天天桴色 | 精品久久久久久国产 | 男女久久久视频2019 | 香港三级日本三级三级韩级2 | 九九99线视频在线观看 | 亚洲中文国产最新在线观看 | 国产乱码精品一区二区三区四川 | 免费AA片少妇人AA片直播 | 欧美a级黄 | 欧美国产亚洲一区二区三区 | jyzzjyzzz视频国产在线观看 | 91精品91 | 婷婷亚洲五月 | 国产与自拍 | 最新黄色在线 | 国产资源视频 | 成人韩免费网站 | 一区二区视频在线观看高清视频在线 | 美女写真福利视频网站 | 欧美精品亚洲精品日韩专区 | 久久97精品久久久久久清纯 | 欧美精品久久96人妻无码 | 五男一女NP慎入H小说 | 真大真粗真爽使劲好猛小说网 | av线上免费观看 | 波多野结衣在线影视免费观看 | 亚洲精品久久久久69影院 | 久久99国产精品久久99软件 | 女色综合| 名女躁b久久天天躁 | 国产黄色一级毛片 | 性欧美一区 | 丰满少妇大力进入A片中文 丰满少妇内射一区 | 麻豆传煤官网APP入口 IOS | 久久久99品牌的特色产品 | 青青青国产精品免费观看 | XL司令全集免费 | 日韩欧美一区二区三区在线播放 | 欧美午夜寂寞影院安卓列表 | 国内精品久久影院 | 欧美精品18videosex性欧 | 欧美日韩不卡视频一区二区三区 | 主播蜜汁丝袜精品自拍 | 国产福利在线看 | 日本免费三级网站 | 亚洲欧洲中文日韩久久AV乱码 | 少妇人妻偷人精品视蜜桃 | 郭美美17.2g ed2k | 国产成人精品综合久久久 | 96精品专区国产在线观看高清 | 日本少妇内射视频播放舔 | 在厨房被夫上司强迫中文 | 四虎影视最新2024在线观看 | 国产刺激熟女短视频在线观看 | 国产亚洲精品久久7788 | 久久99精品久久久久久园产越南 | 国产 欧美 亚洲 中文字幕 | 青青青国产手机在线播放 | 麻豆一区二区在我观看 | 亚洲一区在线播放 | 花房姑娘免费观看8集电视剧高清 | 色综合久久精品亚洲国产 | 好屌草这里只有精品 | 182福利视频 | 免费 高清 日本社区 | 国产女同一区二区三区五区 | WWW国产精品内射熟女 | 欧美极品在线观看 | 欧美大码毛片在线播放 | 久久A情A片一区二区三区无码 | 国产中文字幕第一页 | 一本大道一卡二卡三卡 视 一本大道一卡二卡三卡四卡在线观 | 亚洲激情中文字幕 | 极品美女久久久久久久久久久 | 国内精品不卡一区二区三区 | 免费国产a国产片高清不卡 免费观看一级欧美在线视频 | 国产精品兄妹在线观看麻豆 | 麻豆一区二区在我观看 | 国产强伦姧人妻完整版 | 少妇做爰喷水高潮呻吟A片免费 | 奇米777四色精品综合影院 | 坐在校草身上摩擦H | 全肉的色情小說 | 久久黄色小视频 | 色综合亚洲色综合网站 | 中文字幕亚洲一区婷婷 | 狠狠综合久久综合88亚洲 | 欧美搡BBBBB搡BBBBB | 亚洲免费影院 | 在线涩涩免费观看国产精品 | 污污网站免费下载入 | 一级做a爱片在线播放 | 经典强奷系列人妻 | 欧美亚洲熟妇一区二区三区 | 国产精品乱码久久久久久软件 | 亚州在线电影免费观看 | 日本一区二区三区无码苍井空 | 成人国产精品一级毛片了 | 成人h免费观看视频 | 午夜色大片在线观看 | 含紧一点H边做边走动免费视频 | 久久综合综合久久狠狠狠97色 | 五月综合激情 | 亚洲另类激情综合偷自拍图 | 无码高潮又爽又黄A片 | 国产a级一级久久毛片 | 色吧在线| 亚洲中文字幕在线播放YW193. | 国产又大又硬又粗 | 乱公和我做爽死我了A片 | 秋霞伦理片 | 秋霞电影网伦大理电影在线观看 | 性饥渴的漂亮女邻居BD视频 | 一本色道久久综合一区 | 理论片午午伦夜理片2021 | 精品久久成人免费第三区 | 日本熟妇乱人免费视频 | 97久久久久国产精品嫩草影院 | 伊人成人生综合网图片 | 人妻洗澡被强伦姧完整国产 | 精品国产午夜肉伦伦影院 | 最近最好的2019中文字幕 | 日本在线视频免费 | 思思99re66在线精品免费观看 | 日日干天天操 | 精品国产免费第一区二区 | 欧美激情在线一区二区三区 | 亚洲AV久久无码精品九九九小说 | 亚洲 欧美 国产 图片 | 亲胸揉胸膜下刺激视频午夜小说 | 青青青青青国产免费手机看视频 | 嗯啊跳蛋啊别舔了啊 | 色婷婷综合激情视频免费看 | 直接观看黄网站免费视频 | 张一苇扮演者 | 国精品人妻无码一区二区三区三 | 伊人情人网综合 | 午夜寂寞影院视频观看 | 全黄H全肉短篇n男男 | 色五月最新网址 | 全黄H全肉短篇禁乱 | 蝴蝶谷成人论坛 | 国产成人久久综合第一区 | 一本色道久久综合狠狠躁篇 | 91香蕉成人免费高清网站 | 亚洲www视频| 国产区精品综合在线 | 亚洲 日韩 色 图网站 | 嫩草影院地址一二三 | 久久丫精品忘忧草西安品 | 精东视频影视传媒制作精品免费版 | 最近最新高清中文字幕MV在线 | 成人福利免费在线观看 | 国产又湿又黄又硬又刺激视频 | 日本又黄又爽又色又刺激的视频 | 黄网站在线观看视频 | 艳情小区少妇教师小说 | 新版天堂中文资源官网 | 123成人网| 天天色综合天天 | 小雪尝禁果又粗又大的视频 | 国产精品爽爽久久久久久无码 | 香港三级88久久经典 | 爱啪网亚洲第一福利网站 | 波多野结衣在线一区 | 久久国产欧美日韩精品免费 | 2022年亚洲午夜一区二区福利 | 强壮公次次弄得我高潮A片视频 | 久久影院一区 | 成熟人妻AV无码专区A片 | 有人有片资源吗在线观看WWW视频 | 污网站在线免费看 | 欧美操片在线观看 | 国产SUV精二区九色 国产SUV精二区69 | 天天干天天玩 | 国产熟妇精品一区二区 | 黑人巨茎大战白人女40CM | 欧美日韩中文国产一区二区三区 | 成人网免费视频 | 国产成人性毛片 | 亚洲午夜久久久精品影院视色 | 在教室伦流澡到高潮H女攻视频 | 国产精品色情一区二区三区 | 最新91网址 | 精品综合久久久久久97超人 | 夜色约爱网站 | 涩涩免费网站 | 老汉网站 | 最爱视频在线直播www | 免费大片av网站 | 亚洲精品一区二区成人 | 无遮挡18禁羞羞视频免费动漫 | 中文字幕免费视频 | 久久久精品免费热线观看 | 中午字幕在线观看 | 久久综合五月婷婷 | 国产一国产一级毛片视频在线 | 斯大林格勒战役免费高清观看 | 少妇被躁爽到高潮无码久久 | 天天操夜夜操美女 | 99久久做夜夜爱天天做精品 | 免费福利视频导航 | 青青热久免费精品视频精品 | 亚洲清纯自偷自拍另类专区 | 97视频在线播放 | 亚洲色无色A片一区二区农夫山泉 | 国产精品人妻无码久久久免费看 | 无码日本精品一区二区片 | 波多久久夜色精品国产 | 日本久久久 | 久久手机娱乐网 | 91精品全国免费观看老司机 | 我和两个女领导玩双飞 | 亚洲欧美偷拍综合图区 | 乱精品一区字幕二区 | 快穿女主有名器的H纯肉黄暴拉文 | 一本到高清无码中文在线 | 啪啪亚洲 | 亚洲午夜视频在线 | 欧美极品video粗暴 | 四虎最新在线永久免费 | 91尤物国产尤物福利 | 一女多男np高辣文h 一女多男nP现代高H | 日产电影一区二区三区 | 国产精品A一区二区三区腾讯导航 | 欧美视频在线观看xxxx | 国产传媒免费看A片 | 99免费精品| 两根一起用力挺进宫交 | 簧片电影大全网站 | 国产成人一区二区三区在线观看 | 日本电影一区二区 | 国产乱码精品一区二区三区四川 | 久久久久久久亚洲精品 | 欧美色图天堂网 | 日本无码人妻丰满熟妇5G影院 | 天堂在线www在线资源 | 国精产品一区二区三区 | 午夜精品视频在线无码 | 日韩亚洲精品无码一区二区 | 国产精品午夜自在在线精品 | 国产偷人妻精品一区 | 无码专区久久综合久综合字幕 | 国产福利在线视频尤物tv | 快播黄网址 | 国产黄的网站免费 | 中文毛片 | 日韩欧美中文字幕送别 | 蜜桃传媒一区二区亚洲AV | 亚洲AV国产SUV | 狠狠综合久久久久综 | 免费的青榴视频在线观看 | 女人十八毛片A级十八女人 女人十八毛片A片久久18 | 欧美日韩中文一区二区三区 | 成人精品视频99在线观看免费 | 91在线资源| 国产免费久久精品久久久 | 亚洲一区精品伊人久久 | 精品视频2024在线视频 | 午夜视频网站在线观看 | 国产A国产国产片 | 乱欲小话说又粗又大 | 欧美91精品久久久久网免费 | 亚洲精品久久久久秋霞 | bt天堂网www bt天堂网.www在线资源 | 日本韩国亚洲欧美在线 | 免费成人伦理电影 | 三男玩一女三A片 | 人成乱码一卡二卡三四卡五卡六卡 | 国产精品国产三级国AV在线观看 | 中文无码有码亚洲 欧美 | 欧美成网站 | 清扫魔 | 久久AV亚洲精品一区无码网 | 久久精品国产久精国产果冻传媒 | 成熟少妇AV片在线观看 | 99在线观看国产 | 天天做天天爱天天综合网 | 色插视频| 99re免费在线视频 | 亚洲欧美精品久久 | 亚洲激情中文字幕 | 国产免费网站看V片在线观看 | 欲盖弄潮百度影音 | 国产免费三级a在线观看 | 视频一区二区欧美日韩在线 | 国产 欧美 在线 | 新版天堂资源中文在线 | 波多野结衣一区二区三区88 | 三级黄色片网址 | 色网站大全| 国产亚洲精品久久久无码网站 | 中国字字幕在线播放2024 | 国产精品久久久亚洲 | 亚洲一级在线 | 久久亚洲国产中文字幕 | 中国ZLJZLJZLJZLJ精品 | 亚洲精品久久片久久久久 | 国产鲁鲁视频在线播放 | 色情黄情亚洲 | 天天干夜夜操视频 | 欧美夜夜噜2024最新 | 中国亚洲女人69内射少妇 | 午夜AV福利一区二区三区内射 | 黄色免费网站在线播放 | 五月天专辑 | 夭天干天天做天天免费看 | 欧美va电影 | jizzxxx欧美| 亚洲精品大片 | 99久久免费国产精品特黄 | 五月天婷婷网站 | 一女多男两根同时进去TXT | 日本jizzcom| 66成人网| 日韩色天使综合色视频 | 97蜜桃网站 | 久久精品视在线看1 | 国产精品99久久99久久久看片 | 忘忧草影院在线www韩国日本 | 日韩在线视频观看在线看 | 黑人又大又粗又硬XXXXX动态图 | 成人网18免费下 | a黄色网 | 亚洲国产高清精品线久久 | 日韩三级 | 久久久无码精品亚洲A片0000 | 国产看真人毛片爱做A片 | 日韩精品在线观看免费 | 超碰在线路98 | 男女啪啪抽搐高潮动态图 | 性做久久久久久坡多野结衣 | 亚洲精品A片99久久久久 | 色琪琪久久综合网天天 | 欧美孕妇乱大交xxxxx | 中文字幕亚洲男人的天堂网络 | 99久久久免费精品免费 | 欧美一区二区三区不卡免费 | 亚洲成年网站 | 特级精品毛片免费观看 | 黄色网址免费在线观看 | 中文字幕综合在线 | 开心四房播播网 | 午夜色大片在线观看 | 神兵小将第一季免费观看 | 性生生活色欲片性按摩 | 99久久精品国产一区二区三区 | 男生解开内衣揉捏胸视频 | 无码精品一区二区三区在线A片 | 日韩精品免费观看 | 中文字幕免费在线播放 | 无码人妻视频又大又粗欧美 | 向日葵APP网页进入 消息称老熟妇乱视频一区二区 | 国产精品久久久久久久午夜片 | JIZJIZJIZ 日本老师水多 | 国产精品久久久久9999高清 | 一本久久综合亚洲鲁鲁五月天 | 午夜亚洲国产理论片二级港台二级 | 2024亚洲 欧美 国产 日韩 | 丁香五月亚洲中文字幕 | 最近免费字幕中文大全视频 | 黑丝丝教师爆乳翘臀上课 | 精品不卡高清视频在线观看 | 开心久久婷婷综合中文字幕 | 五月激情综合网 | 亚瑟电影在线观看免费国语 | 91精品久久久久久久久久小网站 | avav在线精品 | 久久六| 点击进入好看的电影网站 | 国产瑜伽白皙一区二区 | 中文字幕欧美日韩久久 | 78av| 日产学生妹在线观看 | 久久国产视频网站 | 国精产品一二二区传媒有哪些 | 国产AV无码熟妇人妻麻豆 | 精品欧美一区二区三区四区 | 日本三级香港三级韩国三级 | www欧美在线观看 | 一级做a爰片久久免费 | 国产人妻熟女偷在线视频 | 2024四虎影视最新在线 | 成人午夜毛片 | 黑人狂躁日本妞无码A片视频 | 天堂网在线观看视频 | 欧美又大又硬又长又粗A片 欧美又黄又大又爽A片 | 波多野结衣一二区 | 日本无码一二三区别免费 | 做爰高潮A片在线播放 | 久久99精品久久久久久h | 色综合激情 | 国产一区二区中文字幕 | 91av国产在线 | 中文字幕不卡一区二区三区 | 菠萝蜜国际一区麻豆 | 午夜精品在线免费观看 | 国产香蕉视频在线播放 | 深夜日韩 | ACG全彩绅士口工侵犯漫画 | 日韩三级中文字幕 | 黄色的视频网站在线观看 | 免费无码又爽又刺激高潮视频日本 | 国产精品嫩草99AV在线 | 成人在线视频网站 | 天天躁日日躁狼狼超碰97 | 三级网址在线观看 | 亚洲风情无码免费视频 | 特级毛片全部免费播放免下载 | 久久婷婷激情综合中文字幕 | 最近更新中文字幕版 | 免费的性L交A片Y | 国产精品资源在线观看 | 国产伦精品一区二区免费 | 91香蕉视频免费 | 国产综合亚洲区 | 色噜噜噜色噜噜噜色琪琪 | 雾岛奈津美ed2k | 久久人人做人人妻人人玩精品AV | 午夜视频免费 | 国产在线观看自拍 | 国产精品九九免费视频 | 国产精品无码人妻系列AV | 中文字幕在线欧美 | 激情婷婷六月天 | 亚洲AV无码专区国产精品麻豆 | 亚洲成人原创 | 牛牛社区 | 国产午精品午夜福利757视频播放 | 巨乳女子校生 | 厨房少妇人妻好深太紧了 | 国产欧美亚洲日韩图片 | 公么征服我完整版中文 | 欧美亚洲色倩在线观看 | 人人看人人爽 | 翁公与小莹在客厅激情 | 日本国产一区在线观看 | 97在线观免费视频观看 | 在线播放真实国产乱子伦 | 日韩高清在线播放不卡 | 亚洲日本视频 | 高清大片国产片 | 四虎影视国产精品 | 香蕉自拍视频 | 高清一区二区三区 | 91久久九九精品国产综合 | 深夜特黄a级毛片免费播放 深夜日韩 | 国产卡二卡三卡四卡免费网址 | 啊插得好深高H | 无码又爽又刺激视频A片涩涩 | 午夜在线免费观看视频 | 天堂网www在线资源中文 | 九九九九在线精品免费视频 | 久草免费新视频14 | 国产精品久久久久久无码人妻 | 2022日韩欧美国国产AV | 久久99精品久久久久久园产越南 | 国产精品岛国久久久久 | 麻豆精品国产精华精华液好用吗 | 晚娘上部恋欲 | 久久99精品久久久 | 国产精品V无码A片在线看小说 | 另类电影专区 | 交换邻居波多野结衣中文字幕 | 女人下边被添全过程A片图片 | 强伦姧人妻日韩A片 | 欧美XXXXX俄罗斯乱妇 | 三级黄色片网站 | 特级欧美真人做爰大片 | 99视频在线看观免费 | 久久精品国产欧美日韩99热 | 粗暴肉开荤高H文公交车 | 久久精品国产久精国产果冻传媒 | 毛片性生活 | 亚洲视频五区 | 色五月在线视频 | 日韩免费一区二区 | 亚洲国产成人在人网站天堂 | 涩涩97| 两个人免费视频在线观看直播 | 一女被两根凶猛挺进动态图 | 国产精品人妻一区二区三区无码 | 久久久久久久综合日本亚洲 | 97涩涩涩 | chinese国产hdfree中文 | 中文字幕无码中文字幕有码 | 欧美日韩精品一区二区三区视频播放 | 精品一区二区久久久久久久网站 | 91综合久久久久婷婷 | 满了好涨嗯不要了nphhh | 牛牛在线(正)精品视频 | 久久国产人妻一区二区免费 | 97久久国产露脸精品国产 | 少妇高潮抽搐无码AV久久 | 久久久这里有精品999 | 欧美人成一本免费观看视频 | 国产乱码卡二卡三卡老狼在线观看 | 欧美日韩中文在线 | 外国三级毛片 | 天天噜夜夜操 | 欧美激情视频一区二区免费 | 亚洲久久无码在线视频 | 好看的毛片 | 乱亲H女秽乱常伦强强和苹苹 | 97视频在线观看免费播放 | 四房色播在线电影 | 欧美日韩精品一区二区三区视频播放 | 又硬又粗又大一区二区三区视频 | 国产精品人妻一码二码尿失禁 | 久久丫精品忘忧草西安品 | 人人爽久久久噜噜噜婷婷 | 性一交一乱一伦在线播放 | 日本人丰满xxxxhd | 婷婷激情综合色五月久久 | 国产三级在线播放不卡 | 99久久国产露脸国语对白 | 午夜天堂一区人妻 | 久久亚洲w码s码 | 无套内谢少妇毛片A片软件 无套内谢少妇毛片A片小说色噜噜 | 久久久久久久国产视频 | 久久草在线精品视频99 | 亚洲日日做天天做日日谢 | 天天影视色欲 影视 | 秋霞伦理机在线看片 | 免费一级毛片不卡在线播放 | 波多野结衣中文视频 | jizz 亚洲大全| 2019精品国产品在线18年网 | 国内精品久久毛片一区二区 | 免费观看日本视频 | 99久久精品免费看国产 | 丁香花在线影院观看在线播放 | 五月婷婷之综合缴情 | 国内精品久久久久久久999下 | 四个熟妇搡BBBB搡BBBB | 国产亚洲国际精品福利 | 亚洲精品久久久久中文另类 | 久久瑟瑟 | 成人污污污WWW网站免费直播 | 激情综合五月开心婷婷 | 日本无码V视频一区二区 | 精品无码日本蜜桃麻豆走秀 | 久久99精品久久久久久 | 国产jizzjizz免费看jizz | 日本无码人妻丰满熟妇A片 日本无码人妻丰满熟妇5G影院 | 国产AV电影区二区三区曰曰骚网 | 婷婷五月在线视频 | 久久亚洲国产中文字幕 | 日本三级中文字幕 | 好吊妞无缓冲视频观看 | 久久久WWW成人免费精品 | 一区二区自拍 | 男女又黄又刺激B片免费网站 | 樱花草无码专区日本 | 日韩三级国产 | 国产亚洲福利精品一区 | 夜夜爽夜夜操 | 天天做天天爽天天谢 | 久久久久久全都是精品app | 1000美女模特人体照 | 大陆一级毛片免费视频观看i | 欧美一级特黄乱妇高清视频 | 女人被躁到高潮免费视频 | 亚洲精品久久无码AV片2022 | 免费一级黄色 | xxxx成人| 欧美精品XXXXBBBB | 国产手机在线自在拍 | 性开放的欧美大片高清播放 | 久久久91精品国产一区二区三区 | 天天舔天天插 | 国产日产久久 | 精品乩伦视频 | 国产一区二区三区美女在线观看 | free chinese国产 | 日本最新免费网站 | 老熟女强人国产在线 | 日韩一区二区三区免费视频 | jizzjizzjizz亚洲女| AV夜夜躁狠狠躁日日躁 | 在线日本视频 | 精品交小说合集500篇 | 欧美伊久线香蕉线新在线 | 日韩在线视频精品 | 天堂网 | 国产精品久久久久久亚洲毛片 | 秋霞影院精品久久久久 | 妻子的背叛免费看 | 看草逼| 一级毛片全部免 | 欧美电影在线观看 | 种地吧2在线观看 | 日本精品久久无码影院 | 小小女视频网站色琼网站 | 色中色 最新网址 | 国产精品久久久久久麻豆一区 | 日韩三级伦理在线 | bl文H全肉 | 六月婷婷啪啪 | 国产亚洲国产bv网站在线 | 免费中文字幕不卡视频 | 国产亚洲精品久久综合阿香 | 国产又黄又粗又爽又色的视频软件 | 免费无码又爽又黄又刺激网站 | 久久青青无码AV亚洲黑人 | 午夜寂寞院 | 国产a国产片 | 精国产品一区二区三区A片 精产国品一二三产品麻豆 金瓶梅2快播 | 日本高清一区二区三区无码 | 欧美成人一区二区三区在线视频 | 国偷自产视频一区二区99 | 日日摸天天摸人人看 | 粉嫩大学生无套内射无码卡视频 | 亚洲最大色情4338 | 国精品人妻无码一区二区三区三 | 亚洲AV久久久噜噜噜久久 | 国产AV亚洲精品无码专区 | 日韩二三区 | 一区二区三区无码高清视频 | 97精品视频 | 日韩欧美一区二区不卡 | 四房婷婷在线视频播放 | 国产精品久久久久久52AVAV | 中文字幕 日本 | 国产精品久久毛片 | 欲乱艳荡少寡妇全文免费 | 色网在线观看 | 日韩三级影院 | 欧美亚洲啪啪 | 亚洲午夜小视频 | 久久国产免费观看精品1 | 岛国三级视频 | AV无码国产精品午夜A片麻豆 | 男人的天堂2024无码 | 精品国产精品人妻久久无码五月天 | 最近最好看中文字幕免费 | 欲女春潮bd | 色五月在线视频 | 天天影视色香欲综合网 | 欧美在线观看视频一区 | jizz成人| 最近免费中文字幕大全高清10 | 国产三级精品三级在线专区1 | 色播六月 | 天美影视传媒 | 天天操天天操天天干 | 亚洲AV久久无码精品九九小说 | 麻豆高潮AV久久久久久久 | 国禁国产you女视频网站 | 免费理伦电影 | 伊人影院亚洲 | 99精品免费久久久久久久久蜜桃 | 一级毛片不卡 | 91极品视频在线观看 | 女闺蜜扒开腿让我CAO她 | 亚洲性无码A片在线观看尖叫 | 成人做爰WWW免费看视频韩国 | 日韩城人网站 | 婷婷四月开心色房播播网 | 天天操夜夜爱 | 欧美日韩国产一区二区三区不卡 | 久久99精品视免费看 | 国产精品久久久久久亚洲色 | 豪妇荡乳1一5潘金莲2在线 | 一区二区三区不卡在线 | 久久久亚洲精品一区二区三区 | 老司机欧美 | 2019中文字幕在线 | 日韩欧美群交P片內射中文 日韩欧美中 | 国产麻豆一级在线观看 | 美妇市长的娇呻浪吟 | 国产亚洲精品久久久久久白晶晶 | 丁香五月缴情综合网 | ts人妖国产一区 | 一级做a爱免费观看视频 | 国产又色又爽又免费的刺激软件 | 97在线视频观看 | 夭天干天天做天天免费看 | 色播四房间 | 韩国高清大片免费观看在线第9集 | 性欧美精品久久久久久久 | 成人免费aaaaa毛片 | 久久大香伊蕉在人线国产昨爱 | 最近高清中文在线字幕观看 | 激情文学小说区另类小说同性 | 久久精品亚洲综合一品 | 人人爽天天碰狠狠添 | 日本一道人妻无码一区视频 | 中文字幕在线播放视频 | 99久久无码一区人妻A黑国产馆 | 人人舔人人爱 | 精品综合久久久久97 | 成人无码精品一区二区在线观看 | 欧美极品第一页 | 呜呜呜看看色波 | 99精品视频免费 | 天天色天天干天天 | 免费三级毛片 | 在线视频这里只有精品 | 少妇高潮特黄A片 | 日本日本熟妇中文在线视频 | 黄色片视频国产 | 日本二区三区欧美亚洲国 | 在线播放91撕破艺校舞蹈系 | 亚洲国产成人久久综合区 | 91香蕉小视频 | 久久97视频 | 国产 精品 自在 线 囯精品人妻无码一区二区三区99 | 免费无码又爽又刺激A片软 免费无码又爽又刺激A片小说在线 | 国产AV99激情久久无码天堂 | 国产熟妇精品一区二区 | 国产亚洲精品久久久久久久软件 | 欧美综合区自拍亚洲综合图 | 国产一性一交一伦一A片 | 麻豆文化传媒精品一区观看 | 狠狠的撸2016最新版 | 欧美成人h版网址 | 亚洲国产精品成人无码A片软件 | 99久久99视频 | 秋霞网伦理片新网 | 天天综合亚洲国产色 | 日韩美无码有码人妻精品 | 国产免费人妻一区二区三区 | 色综合婷婷 | 国产91久久精品一区二区 | 日日噜噜夜夜狠狠视频 | 中国性受xxxx免费 | 小浪货你夹得我真紧 | 免费的中国黄网站大全 | 99精品久久久久久 | 亚洲AV久久无码精品九九九小说 | 日本高清色本在线www游戏 | 色偷偷免费| 精品视频在线观看 | 久久国产天堂福利天堂 | 美国免费高清一级毛片 | 超91精品手机国产在线 | 国禁国产you女视频网站 | 日本韩无码电影 | 日本哺乳期xxxxhd奶水 | 五月婷婷六月婷婷 | 欧美在线观看视频一区 | 国产精品久久久久久久久久久威 | 综合无码色情一区二区 | AV性色AV久久无码AI换脸 | 国产午夜精品美女视频露脸 | 日韩小视频在线播放 | 国产精品色婷婷在线观看 | 91av欧美| 中文字幕无码人妻AAA片 | 99久久无码一区人妻A片蜜桃 | 免费超级淫片日本高清视频 | 久久福利视频导航 | 日本韩国一区二区三区 | 香港黄页精品视频在线 | 欧美成人免费看片一区 | 国产一级特黄高清免费下载 | 成人麻豆日韩在无码视频 | 波多中文字幕 | 天天爱天天做天天干 | 欲色影视天天一区二区三区色香欲 | 99国产精品高清一区二区二区 | 老司机午夜精品 | 伊人婷婷涩六月丁香七月 | 无码AV免费精品一区二区三区 | 国产一区2区 | 日韩一区二区视频在线观看 | 午夜一区二区三区 | 9797色| 四虎影视免费观看免费观看 | 妞色网| 福利片导航 | 波多野结衣免费在线视频 | 日韩视频精品在线 | 色-情-伦-理一区二区三区 | 蝴蝶谷成人网站 | 91香蕉在线视频 | 又硬又粗进去好爽A片欧美 又硬又粗进去好爽A片天美APP | 又黄又爽又猛1000部A片 | 成 人 黄 色 免费 网站无毒 | 东北60岁熟女露脸在线 |