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

conhecimento

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

feepjos

11 Oct 2025(atualizado 11/10/2025 às 00h10)

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

Temas

Compartilhe

Roblox adota selfies em vídeos para avaliar idade de usuários e liberar conversas sem filtros'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 futebol clik jogosits 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

10_Modern_Mechanical_Turks_When_Automation_Is_Just_Humans_in_Disguise.txt

Jogadores usam Roblox para protestar sobre imigra??o nos EUA; entenda conhecimento e os abrangente explorar.

GRáFICOS

nos eixos

Yorkshire reservoir levels fall below one third despite rainfall.txt

'A vida de Chuck' adapta bonito conto de Stephen King com ternura e verborragia; g1 já viu conhecimento e os ponto quente conhecimento.

Navegue por temas

'Hollow Knight: Silksong': Lojas digitais apresentam instabilidade durante lan?amento do game Green Day chega ao The Town com 40 anos de experiência e can??es que criticam política dos EUA Rick Davies, vocalista e fundador do Supertramp, morre aos 81 anos 'Ladr?es' é aventura criminosa divertida com Austin Butler mais charmoso do que nunca; g1 já viu IR: mudan?as devem beneficiar quem recebe até R$ 7.350; veja quanto cada faixa salarial ganhará Correios ampliam prejuízo no segundo trimestre, e rombo vai a R$ 4,3 bilh?es em 2025 The Town 2025: famosos v?o ao 2o dia de festival; FOTOS Bruce Dickinson compara políticos brasileiros a diabo e canta música que ficou 41 anos sem ser tocada Roqueiros chegam cedo para ver ídolos da infancia no 2o dia do The Town 'Assassin's creed shadows' é ambicioso ao trazer dois heróis em Jap?o feudal recriado em detalhes; g1 jogou
久久99精品一级毛片 | 亚洲一区二区三区视频 | 日韩成人免费在线视频 | 两个人免费视频在线观看直播 | 国产亚洲精品久久久无码狼牙套 | 亚洲无AV在线中文字幕 | 少爷湿润粗大跪趴含BL | 狠狠色噜噜狠狠狠狠网站视频 | 樱井莉亚qvod | 疯狂的少妇2做爰完整版韩国 | 99久久无码一区人妻A片麻豆 | 亚洲一区二区三区夜色 | 看亚洲人配人配人种jizz | 亚洲天天做日日做天天看2018 | 丁香色婷婷 | 强吻扒胸摸屁 | 99精品电影一区二区免费看 | aⅴ免费视频 | 五月色丁香婷婷网蜜臀AV | 黑色幽默国语版全集 | 操 美女视频 免费网站 | 嫩草国产福利视频一区二区 | 免费福利视频导航 | 无人区乱码1区2区3区 | 亚洲一区国产 | 2021国产成人精品久久 | 别插我B嗯啊视频免费 | 91网址在线播放 | 精品一区二区三区免费毛片 | 麻豆影视视频高清在线观看 | 99re热在线观看 | 国精产品一区二区三区有限 | 99re在线精品视频 | 99re6热精彩视频在线观看 | 久久国语精品 | 给我个可以免费看片的 | 午夜视频国产 | 91插插插插插 | 久久久久久久国产精品影院 | 日本三级黄网站 | 日本三圾片在线观看 | 国产天天操 | 超碰caoporen国产 | 一级做a爱过程免费视 | 亚洲最大的熟女水蜜桃AV网站 | 日韩一区二区三区中文字幕 | 欧美一级视频在线观看 | 中国一级特黄真人毛片 | 精品伊人网 | 欧美顶级少妇做爰HD | 欧美深深色噜噜狠狠yyy | 国产无遮挡裸体免费视频A片软件 | 看看免费a一片欧 | 国产欧美一区二区精品仙草咪 | 国产一级视频在线 | 黄色网页在线看 | 品色 官网| 大陆黄色网 | 国精产品一区二区三区有限公司 | 亚洲国产天堂久久综合226 | 黄色片毛片 | 水蜜桃视频下载方法 | 中国黄色一级片 | a级黄色片网站 | 男女毛片免费视频看 | 国产精品久免费的黄网站 | 亚洲国产成人久久 | 色哟哟视频在线观看免费播放 | 亚洲欧美日韩中文字幕在线不卡 | 亚洲精品久久久久久久久久久 | 狠狠色噜噜狠狠色综合久 | 欧美三级日韩三级 | 精品精品国产欧美在线 | 久久久久香蕉 | 91亚洲视频在线 | 九九精品视频在线观看九九 | 97蜜桃图片| 91天堂一区二区 | 免费伦费一区二区三区四区 | 国产熟妇无码A片AAA毛片视频 | 日本v片| 三级中国免费的 | 波多野吉衣在线视频 | 亚洲熟女乱色综合一区小说 | 中文字幕欧美日韩久久 | 欧美91精品久久久久网免费 | 日韩精品亚洲专区在线影院 | 99视频网站 | 哪里看毛片 | 午夜精品一区二区三区免费视频 | 窝蝌蚪免费精品视频 | 公交车被多男摁住灌浓精芽子 | 激情综合五月开心婷婷 | 色网在线 | 亚洲 日本 欧美 中文字幕 | WWW婷婷AV久久久影片 | JIZZJIZZ日本护士水多多小说 | 亚色图 | A片日本人妻偷人妻人妻 | 漫画老师全彩超级巨大乳 | 欧美伦理片美亚电影网 | 全球金属网 | 久久碰人妻一区二区三区 | 天天涩综合 | 性夜夜春夜夜爽A片欧美 | 黑巨茎大战俄罗斯美女后宫 | 美女扒开胸罩露出奶头的动态图片 | 日本午夜在线观看 | 色偷偷在线视频直播 | 伊人网大香| 成人福利免费在线观看 | 18成人片黄网站WWW | 日本wwxx | 亚洲国产成人A片乱码 | 被教官按在寝室狂到腿软视频 | 麻豆文化传媒一区二区 | 六月丁香婷婷网 | 国产五月婷婷 | 一级毛片免费观看不卡的 | 亚洲美女毛茸茸 | 精品人妻无码一区二区三区蜜桃一 | 婷婷激情五月 | 青青热久免费精品视频在首页 | 亚洲三级天堂 | 亚洲AV成人精品日韩一区 | 忘忧草社区在线日本韩国电影 | 乳奴调教H产乳涨揉产奶调教A片 | 欧美三级日韩三级 | 亚洲色欲色欲www在线观看 | 新超碰97在线观人人澡 | 8x免费视频| 免费看电影网站 | 成人亚洲国产综合精品91 | 91九色视频在线观看 | 久久精品少妇高潮A片免费观 | 免费高清日本 | 日日天天干| 另类人妖 | 91亚洲视频在线 | 97精品国产综合久久 | 粉嫩久久AV色欲AV久久 | 成人福利网 | 亚洲中国精品精华液 | 午夜视频网站 | 亚洲AV成人噜噜无码网站A片 | 消息称老熟妇乱视频一区二区 | 中文国产成人精品久久久 | a级精品九九九大片免费看 a级精品国产片在线观看 | 色97| 香港韩国日本三级 | 国产亚洲精品字幕在线观看 | 日本高清无日本高清视频 | 自拍日韩亚洲一区在线 | 六月婷婷国产精品综合 | 18女下面流水不遮图免费图 | 国产又爽又大又黄A片 | 色欲天天天综合网免费 | 九一果冻传媒制片入口 | 国产精品XXXXX免费A片 | 2024最新四虎免费 | 最近日本免费观看高清视频 | 97碰碰碰免费公开在线视频 | 最新日韩欧美不卡一二三区 | 国内揄拍国产精品人妻门事件 | 亚洲 另类 春色 小说 | 内射中出无码护士在线 | 国产成人久久精品推最新 | 国产超91| 日本无码免费A片无码视频 日本无码人妻精品一区二区蜜桃 | 国产一区2区 | 男男挤奶油进去PLAY高污 | a网站在线观看 | 风韵饥渴少妇在线观看 | 夜色约爱网站 | 国产精品变态重口在线 | jizzjizzjizz亚洲18| 一级毛片视频在线 | 天堂а√中文最新版地址 | 看看少妇的阳道毛偷拍女浴室 | 欧美hd性| 偷拍自怕亚洲在线第7页 | 日本A片成人片免费视频生活片 | 国产在线精品一区免费香蕉 | 在镜头里被CAO翻了H | 国产精品51麻豆CM传媒 | 日韩欧美伦理片 | 男生强行扒了女生的衣服视频 | 国产精品国产精品国产三级普 | 先锋影音男人av资源 | 婷婷成人亚洲 | 2018最新午夜在线视频 | 色在线免费观看 | 午夜色大片在线观看 | 63jjj全国最大 | 被群CAO的合不拢腿H小说 | 男人把女人桶到爽免费看视频 | 国产加勒比| 伊人成综合人网 | 黄色毛片免费网站 | 国产SUV精品一区二区四区三区 | 黄色片网址在线观看 | 影视AV久久久噜噜噜噜噜三级 | 精品欧美一区二区三区四区 | 色婷婷综合激情 | 国内精品伊人久久久久妇 | 黑人添女人囗交做爰视频 | 久久亚洲国产最新网站 | 国产在线无码不卡影视影院 | 欧美色道 | 久久久精品中文字幕麻豆发布 | 日本猛少妇色XXXXX猛叫 | 天天干天天操天天摸 | 各种姿势被陌生人np高h小说 | 男女阳茎牲交32动态图片免费 | 日本高清不卡中文字幕 | 日本波多野结衣字幕久久 | 日日摸天天添天天添无码蜜臀 | 逼喷水视频| 中文字幕日韩精品有码视频 | 我和乡下妽妽的性故事小说 | 97香蕉| 国产女人水真多18毛片18精品 | 日本高清视频网站www | 男人天堂网2022| 熟女少妇内射日韩亚洲 | 最新韩国r剧2019在线观看 | 五月婷婷啪 | 国产FREESEXVIDEOS性中国 | 色多多成人性视频APP下载 | 秋霞最新高清无码鲁丝片 | 久久久久久亚洲精品影院 | 北京熟妇搡BBBB搡BBBB | 日本中文字幕视频 | 黄页视频免费观看 | 国产精品二区页在线播放 | 少妇性BBB搡BBB爽爽爽四川 | 精品精品国产欧美在线 | 里番a c g全彩 | 中文字幕乱码亚洲精品一区 | 中国XXX孕妇做爰 | 九九热国产视频 | 国产精品人妻一区二区99 | 五月激激激综合网 | WWW国产精品人妻一二三区 | 精品玖玖玖视频在线观看 | 国产精品日日做人人爱 | 免看黄29分钟继续看 | 无码欧美毛片一区二区三在线视频 | 野花社区www在线资源 | 性欧美极品 | 五月综合激情网 | 亚洲色婷婷免费视频 | 曰曰摸天天摸人人看久久久 | 黄色的网站免费看 | 欧美性做爰又大又粗又长 | 伴郎粗大的内捧猛烈进出视频观看 | 一级毛片日韩 | 精品人妻人人爽久久爽AV | 亚精品一卡2卡三卡4卡无卡 | 亚洲网址在线 | 日本在线看 | 日本人妻仑乱少妇A级毛片潘金莲 | 中文字幕完整高清版 | 狠狠色丁香久久综合婷婷 | 亚洲欧美自拍制服另类图区 | 荡公乱妇第1章方情95视频 | 免费啪视频在线观看视频久18 | 无限看片的动漫视频在线观看 | 性做爰A片免费看网站 | 岳艳的胯下做爰岳艳小说 | 麻豆视频在线观看完整版 | 好久被狂躁A片视频无码免费视频 | 美国三级网站 | 国产人妻人伦又粗又大爽歪歪 | 国内熟女精品熟女A片小说 国内揄拍国产精品人妻在线A片 | 久久无码人妻国产一区二区 | 亚洲电影网址 | 欧美色婷婷天堂网站 | 亚洲欧洲无码AV在线观看你懂的 | 男生强行扒了女生的衣服视频 | 国产亚洲国际精品福利 | 久久综合色区 | 抖音app国产污| 日本3级网站 | 夜鲁夜鲁夜鲁视频在线观看 | 国产精品自在在线午夜区app | 亚洲午夜无码毛片AV久久小说 | 精品国产污污免费网站入口 | 宝贝把内衣脱了我想吃胸 | 亚洲尤码不卡AV麻豆 | 3d 肉 蒲 团 3d人肉蒲团之极乐 3d肉 蒲团 | 999久久欧美人妻一区二区 | 奇米777四色影视在线看 | 亚洲偷怕 | 免费精品国偷自产在线在线 | 日本老熟五十路息孑安野由美 | 手机看片99 | 欧美金妇欧美乱妇视频 | 99亚洲男女激情在线观看 | AV无码国产精品午夜A片麻豆 | 国色天香综合国产一区 | 国产亚洲熟妇在线视频 | 国产亚洲精品久久久无码狼牙套 | 日韩国精品一区二区A片 | 中文有码视频在线播放免费 | 久久免费视频精品 | 伊人网大 | 九九精品视频一区二区三区 | 五月欧美激激激综合网色播 | 亚洲色大成网站WWW永久在线观看 | 波多野结衣在线播放 | 人人插人人澡 | 成人开心网 | 久久久无码精品亚洲A片猫咪 | 免费一级欧美大片在线观看 | 毛片三级在线观看 | 午夜福利电影网站鲁片大全 | 热の综合热の国产热の潮在线 | 日本综合欧美一区二区三区 | 玩弄少妇高潮A片XXX | 神兵小将第一季免费观看 | 韩国最污禁网站免费观看 | 图片区乱熟图片区小说 | 日本妇人成熟A片高潮小说 日本高清免费观看高清电影 | 四虎最新网站 | 玖玖成人| 亚洲精品久久202420247 | 日本免费一本天堂在线 | 欧美视频在线播放bbxxx | 97国产精品视频 | 最好韩国日本免费高清 | 我强进了老师身体在线观看 | 中文字幕首页 | 狠狠色网 | 国产1区2区三区不卡 | 精品剧情v国产在线麻豆 | 人妻被粗大猛进猛出69国产 | 亚洲看| 韩国三级精品 | 四虎影视永久无码精品 | 国产又爽又黄无码无遮挡在线观看 | 久久理伦片琪琪电影院 | 婷婷四月开心色房播播 | 国产成人亚洲综合 | 日本高清一卡二卡三卡四卡免费 | 三级中国免费的 | 亚洲1区1区3区4区产品乱码芒果 | 亚洲五月婷| 性色爽爱性色爽爱网站 | 日韩精品久久久肉伦网站 | 野花社区WWW三 | 色婷婷色综合缴情网站 | 国产午夜伦鲁鲁 | 精品AAAA巨乳 | 免费无码又色又爽的视频软件 | 亚洲熟女乱色一区二区三区 | 亚洲精品福利一区二区在线观看 | 精品人妻无码一区二区三区绿 | 在线视频日韩精品 | 国产日产精品久久久久快鸭 | 大学生高清一级毛片免费 | 极品少妇小泬50PTHEPON | 欧洲每年百万吨电子垃圾流向亚非 | 狠狠操夜夜 | 午夜高清视频在线观看 | 色综合色综合色综合色综合网 | 久久只这里是精品66 | 欧美亚洲国产日韩一区二区三区 | 四色777| 久久精品热2019 | 成人午夜视频在线 | 亚洲精品蜜桃久久久久久 | 久久青草国产手机看片福利盒子 | 日韩最新视频一区二区三 | 国产真实夫妇4P交换A片 | 国产SUV精品一区二区69 | 韩剧甜性涩爱 | 在教室伦流澡到高潮H女攻视频 | 深夜爽爽动态图无遮无挡 | 成人午夜天 | 免费一级做a爰片久久毛片潮 | 欧洲亚洲精品A片久久99动漫 | 国产东北露脸熟妇 | 亚洲精品久久久久久久久久无码 | 亚洲精品久久久久久动漫 | 日本久久精品毛片一区随边看 | 99久久精品免费看国产 | 国产又爽又刺激的视频 | A片放荡少妇高潮喷水小说 A片高潮抽搐揉捏奶头视频 | 亚洲精品一区二区 | 国产精品日本不卡一区二区 | 国产精品久久久久毛片真精品 | 欧美肥婆videos另类 | 国产精品黄在线观看免费软件 | 亚洲性生活视频 | 拉风色影院 | 久久香蕉影院 | 久久黄色小视频 | 爱唯侦x论坛 | 国产人妻人伦精品潘金莲 | 午夜生活片| 亚洲天堂热 | 中日韩一卡二卡三卡四卡在线观看 | 一区二区三区免费看A片 | 欧美一卡二卡三卡四卡免ios | 成人区人妻精品一区二欧美毛片 | 丰满少妇乱A片无码 | 国产综合一区二区三区 | 嗯好爽快点插我视频在线播放 | 久久视频在线视频观看99 | 国产亚洲综合成人91精品 | 蜜桃网址 | 亚洲一区二区免费视频 | 亚洲精品无码AV久久久久久小说 | 好久被狂躁A片视频无码免费视频 | 免费欧洲毛片a级视频 | 影音先锋撸一撸 | 高清无码v视频日本www | 狠狠人妻久久久久久综合九色 | 国产永久一区二区三区 | 免费视频不卡一区二区三区 | 丰满多毛少妇做爰视频爽爽和R | 做爰全过程免费的视频在线观看 | 日本久久久久久久做爰片日本 | 日韩国产精品99久久久久久 | 国产又色又爽又高潮免费视频麻豆 | 狂躁美女大BBBBBB视频1 | 四虎最新在线永久免费 | 五月色播先锋在线丁香 | 丁香五月天的最新地址 | 中文版在线乱码在线看 | 天天综合久久久网 | 两个人免费视频在线观看直播 | 精品国产91乱码一区二区三区 | 9亚洲精华国产精华精华液 av大片 | 免费无码又爽又刺激A片涩涩在线 | 日韩成人黄色片 | 清纯 唯美 制服 欧美 动漫 | 丰满熟妇被掹烈进入高清片 | 青青偷拍免费国产2018 | 玖操在线 | 综合久久一区二区三区 | 熟妇的荡欲色综合亚洲图片 | 日本午夜在线观看 | 欧美日韩乱妇高清免费 | 一女N男巨物撞入NP纯肉 | 中国少妇内射XXXX狠干 | 一本大道熟女人妻中文字幕在线 | 永久AV狼友网站在线观看 | 四虎影视在线视频大全免费观看 | 亚洲一区精品在线 | 国产欧美日韩专区发布 | 精品综合久久88色鬼首页 | 成人无码区免费A片视频韩国 | 九九九免费观看视频 | 亚洲永久免费 | 国产二级一片内射视频播放 | 成人网站免费观看 | 国产极品JK白丝玉足喷白浆 | 国产欧美一区二区三区久久 | 日本久久精品毛片一区随边看 | 久久午夜一区二区 | 少妇人妻千子深太紧了A片 少妇爽滑高潮几次 | 婷婷四月开心色房播播 | 农夫导航mcc | h片免费在线观看 | 无人区1在线观看 | 狠狠色色综合站 | 免费高清在线观看a网站 | 三级在线观看中文字幕完整版 | 国产精品久久久久久久网站 | 国产制服丝袜91在线 | 永久免费看A片无码网站四虎 | 99热手机在线观看 | 亚洲AV久久无码精品夜夜挺 | 青青草a国产免费观看 | sss色视频| 欧美又大又粗AAA片免费看 | 亚洲v在线 | 成年人网站在线观看免费 | 国产精品久久人妻拍拍水牛影视 | 国产精品露脸脏话对白 | 美国一级毛片片aa久久综合 | 成人片黄网站A片免费 | 色情WWW成人片WWW222 | 全肉高黄高h的小说推荐 | 婷婷免费视频 | caoporn地址| 真人做爰直播 试看 | 国内精品乱码卡一卡2卡三卡 | 中文字幕网站在线观看 | 亚洲AV成人精品日韩一区 | 亚洲AV怡红院影院怡春院 | 欧美激情综合网 | 欧美成人家庭影院 | 国产熟睡乱子伦视频在线播放 | 亚洲一个色 | porn 国产 | 把手戳进美女尿口里动态图 | 国产又爽又黄又不遮挡视频 | 日本三级韩国三级韩级在线观看 | 精品国产亚洲AV麻豆 | 黄色日韩视频 | 乖宝真紧H太好C了H 灌饱娇嫩H将军公主最新章节 | 美女直播洗澡的软件下载 | 国产精品资源在线观看网站 | 97色伦色在线综合视频 | 97国产v欧美 | 伊人影院亚洲 | 国产精品呻吟久久人妻无吗 | 国产 高速 亚洲 欧美 在线 | 一级毛片q片 | 亚洲色四在线视频观看 | 欧美五月 | 强奷漂亮岳的肉欲乱小说 | 秋霞电影伦理伦理片 | 玖玖在线资源站 | 最新韩国r剧2019在线观看 | 黄页视频在线观看 | 亚洲精品无码成人A片在 | 日韩A片无码一区二区五区电影 | 国产又色又爽又黄的网站在线一级 | 韩国久久久久无码国产精品 | 蝌蚪网站免费观看 | 大学生一级一片第一次免费 | 免费黄色电影观看 | 麻豆文化传媒WWW网站入口 | 乱肉合集乱500篇小说书架下载TXT | 亚洲精品久久久久中文另类 | 99视频有精品视频高清 | 久久国产成人 | 国产激情在线视频 | 国产AV亚洲精品久久久久软件 | www四虎在线高清 | 窝窝色资源站 | 国产亚洲午夜精品a一区二区 | 婷婷综合亚洲 | 97在线精品| 再次出发 电影 | 国产高清a | 欧美久久网 | 最近最新中文字幕免费高清1 | 国产精品资源站 | 亚洲小说电影偷拍在线观看 | 亚洲精品影院久久久久久 | 国产福利影院在线观看 | 免费黄色网址在线播放 | 精产国品一区二区三产区 | 97在线碰 | 在线观看免费网址大全 | 国产91精品黄网在线观看 | 免费一级成人免费观看 | 性夜夜春夜夜爽AA片A | 日韩精品视频在线播放 | 色久久综合视频本道88 | 快播av种子 | 久久AV无码乱码A片无码苍井空 | 亚洲 欧美 日本 国产 高清 | 曰批全过程免费视频在线观看草莓 | 999av视频| 永久免费品色堂 | 泷川雅美的不雅视频 | 妞妞影视一二三区 | 成人在线视频网站 | 国产又色又爽无遮挡免费 | 国产3级在线观看 | 91香蕉视频在线播放 | 九九精品免费观看在线 | 91免费公开视频 | 国产 日韩 欧美 高清 亚洲 | 97人伦色伦成人免费视频 | 日本国产一卡二卡三新区 | 嗯啊 流水噗呲h啪啪皇上双性 | 忘忧草一卡二卡三卡 | 亚瑟电影在线观看免费国语 | 日韩精品一区二区三区在线观看l | 放放电影院 | 新婚人妻不戴套国产精品 | 青草热久精品视频在线观看 | 全部孕妇孕交BBBBBB | 宝宝影院 | 国产成人精品一区 | 亚洲人大战欧洲人A片 | 女人张开腿让男人桶爽免 | 成人a毛片高清视频 | 夜夜狠操 | 日日摸天天摸97狠狠婷婷 | 亚洲免费国产在线日韩 | 污视频app破解下载 污视频app网址丝瓜视频 | 亚洲欧洲精品成人久久曰影片 | 欧美片免费观看网址 | 国产亚洲精品久久久性色情软件 | 色噜噜狠狠色综合欧洲 | 国产网站91 | 欧美日韩国产综合视频一区二区三区 | 亚洲福利区 | 国产精品高潮呻吟AV久久床戏 | 91色在线视频 | 亚洲国产中文在线视频免费 | 狠狠色丁香久久婷婷 | 亚洲乱码日产一区三区 | 久久久国产视频 | 国产激情在线观看完整流畅 | 欧美一区二区在线免费观看 | 免费播放一卡二卡三卡 | 波多野结衣办公室33分jian情 | 乱小说录目伦400篇 乱小说录目伦合集 | 欧美free鲜嫩| 精品欧美一区二区三区久久久 | 妓出阁| 黄色网在线免费观看 | 综合图片亚洲综合网站 | 国产黄色免费网站 | 国产免费观看黄A片又黄又硬小说 | av狼论坛 | 久操线在视频在线观看 | 成年男人午夜片免费观看 | 亚洲网友自拍 | 亚洲国产成人精品动漫 | 国产免费又色又爽粗视频 | 亚洲一区二区三区免费视频 | 免费国产成人 | 色欲精品国产一区二区三区 | 和少妇邻居做爰伦理 | 软玉娇香多肉1V3 | 偷偷撸在线影院 | 97超碰护土香蕉 | 亚洲AV在线一区二区三区 | 欧美日韩欧美 | 成人五夜天 | 欧美日韩综合无码中文字幕 | 婷婷开心激情综合五月天 | A片人人澡C片人人大片 | 爽到喷水(H)小说 | 伊人情人网综合 | 国产91极品福利手机观看 | 亚洲欧美在线x视频 | 91网站在线免费观看 | 国产成人啪午夜精品网站男同 | 琪琪电影午夜理论片77网 | 国产又爽又黄又爽又刺激 | 一本三道a无线码一区v小说 | 狠狠色丁香婷婷综合久久片 | 欧美第一福利 | 大色网我爱看 | 综合亚洲桃色第一影院 | 特黄a大片免费视频 | 亚洲色欲色欲WWW在线看小说 | 久久久精品国产免费A片胖妇女 | 狠狠骚 | 亚洲高清无码在线 视频 | 久久久久亚洲视频 | 欧美性受一区二区三区 | 色迷迷网站| 中文字幕一区二区三区在线不卡 | 可乐视频国产区 | www天堂在线| 干一干 | 国产成人高清亚洲一区91 | 黑人狂躁日本妞无码A片视频 | 男女18一级大黄毛片免 | 精品视频在线播放 | 四虎国产精品免费五月天 | 综合人妻久久一区二区精品 | 波多野结衣高清在线播放 | 国产无遮挡色视频免费观看性色 | 快播网站导航 | 国产综合亚洲区 | 麻豆传播媒体2023最新网站 | 国产又爽又大又黄A片另类 国产又爽又大又黄A片软件 | 最大 成人 综合 | 中文字幕乱码熟女人妻水蜜桃 | 中文字字幕在线乱码 | 亚洲欧美日韩另类精品一区二区三区 | 亚洲 欧美 制服 中文字幕 | 双性受高H公车地铁公交 | 国产在线看不卡一区二区 | 香蕉影院在线播放伊人 | 色播日韩 | 亚洲人成在线播放 | 日日淫 | 久久无码人妻国产一区二区 | 在线免费观看波多野结衣 | 丁香五月网久久综合 | 国产亚洲精品hd网站 | 99在线视频精品费观看视 | 黑人强伦姧人妻日韩那庞大的 | 一本到国内在线视观看 | 青青青国产精品免费观看 | 国产亚洲精品资源在线26u | 男女阳茎牲交32动态图片免费 | 快播人人看电影网 | 亚洲电影在线观看 | 国亚洲欧美日韩精品 | 色婷婷色丁香 | 日韩精品中文字幕高清在线 | 久久国产一区二区三区 | 国产成人91高清精品免费 | 久久精品国产72精品亚洲 | 日韩综合在线视频 | 日本特黄无码毛片在线看 | 久久久无码精品亚洲A片软件 | 午夜福利免费院 | 四房qvod | 午夜在线视频国产极品片 | 内射后射亚洲国产巨乳 | 亚洲免费视频费观看在线 | 国产ts人妖另类 | 伊人综合网 | 最近最新2019中文字幕 | 四色777| 99久久久久国产精品免费 | 91福利专区| 国产天天在线 | 国产精品视频一区牛牛视频 | 国偷自产视频一区二区99 | 97在线视频99播放 | 综合色就爱涩涩涩综合婷婷 | 免费高清在线影片一区 | 亚洲综合在线播放 | 毛片免费毛片一级jjj毛片 | 99精品视频在线 | 偷拍自偷 亚洲 欧美20P | 无限观看社区在线观看免费 | 老湿机免费体十分钟 | www日本高清| 在线 亚洲 欧美 | 深爱激情五月婷婷 | 色噜噜狠狠狠狠色综合久一 | 亚洲AV国产国产久青草 | 美女解开胸衣露出奶头的游戏 | 久久综合九色综合 | 国产免费播放一区二区 | 天天影视香色欲综合网 | 欧美性在线视频 | 国产又爽又大又黄A片另类 国产又爽又大又黄A片软件 | 97人妻成人免费视频 | 免费一级做a爰片久久毛片潮 | 影音先锋中文无码一区 | 美妇岳妇的肉泬目录 | 91久久婷婷 | 国模极品一区二区三区 | 亚洲欧美日本国产高清 | 乱肉合集乱500篇小说书架下载TXT | 日本人伦一区二区三区 | J8又粗又硬又大又爽又网站 | 国产又色又爽又黄的免费站 | 把女人弄爽的特黄A大片 | 天堂中文资源在线观看 | 99在线小视频 | 全国三级网站在线观看 | 精品国产人妻一区二区三区久久 | 69福利| 国产又爽又黄无码无遮挡在线观看 | 欧美亚洲尤物久久精品 | 狠狠躁日日躁夜夜躁A片55动漫 | 欧美videos巨大hd | 色综合久久久久综合体桃花网 | 夜夜综合网 | 韩日美无码精品无码 | 亚洲电影在线观看 | 99久久国产综合精品网成人影院 | 日美三级 | 精品国产91乱码一区二区三区 | 亚洲AV国产AV一区无码小说 | 一区二区三区四区免费视频 | 精品淑女少妇AV久久免费 | 成年人深夜福利 | 无遮挡国产高潮视频免费观看 | 18禁男女无遮挡羞羞视频免 | 伊人婷婷六月狠狠狠去 | 亚洲AV综合色一区二区三区 | 亚洲美洲韩美在线观看 | 四虎永久免费观看在线 | 亚洲A片成人无码久久精品 亚洲A片不卡无码久久 | 欧美日韩亚洲一区二区三区在线观看 | 特级淫片aaaaa片毛片 | 亚洲综合精品香蕉久久网97 | 日本高清www视频在线观看 | 蜜臀AV久久国产午夜福利软件 | 久久久久久国产精品免费 | 黑人巨茎大战欧美白妇 | 亚洲 自拍色综合图区 | 刺激第一页720lu久久 | 日韩AV在线兔费看 | 色欲天天天综合网免费 | 337P粉嫩大胆色噜噜嚕 | 国产丰满人妻一区二区电影 | 一级毛片在线看在线播放 | 九九视频在线 | 日韩高清不卡在线 | 伊人情人综合成人久久网小说 | 楚乔传第二部免费观看全集 | 疯狂的少妇2做爰完整版韩国 | 日本女同视频 | 国产精品沙发午睡系列990531 | 在线观看的黄色网址 | 性福天堂网站 | 美女把小内内脱个精光的照片 |