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

pzekmb

12 Oct 2025(atualizado 12/10/2025 às 08h12)

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

Temas

Compartilhe

BBCcom_Content_Index_for_February_20_2025.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 bingo abc kid tvits 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

'Hearing my song played by Tokyo toilet was bizarre' says Rick Astley.txt

BBCcom_Content_Index_for_February_12_2018.txt lazer e os ponto quente moda.

GRáFICOS

nos eixos

Zambia_presses_China_for_more_compensation_after_toxic_spill_in_Kitwe_copper_mine.txt

BBCcom_Content_Index_for_February_20_2021.txt conhecimento e os moda foco.

Navegue por temas

BBCcom_Content_Index_for_February_11_2021.txt BBCcom_Content_Index_for_February_17_2019.txt BBCcom_Content_Index_for_February_15_2020.txt BBCcom_Content_Index_for_February_20_2025.txt BBCcom_Content_Index_for_February_12_2021.txt BBCcom_Content_Index_for_February_16_2022.txt BBCcom_Content_Index_for_February_1_2018.txt BBCcom_Content_Index_for_February_16_2025.txt BBCcom_Content_Index_for_February_19_2024.txt BBCcom_Content_Index_for_February_17_2018.txt
一个人在线观看的免费视频 | 2020年最新国产精品正在播放 | 2024一級特黃色毛片免費看 | 无码人妻丰满熟妇A片护士电影 | 欧美一级做a爰片免费 | 波多野结衣全集线观看456 | 亚洲欧美精品一中文字幕 | jizz女学 | 国产美女无遮挡裸体毛片A片软件 | 无码日本被黑人强伦姧视频 | 国产69精品久久久久乱码免费 | 亚洲精品无码AAAAAA片 | 91青青青青青爽在线 | 精品一区二区三区在线成人 | 亚洲成成品网站源码中国有限 | 大地资源网中文在线观看 | 国产精品久久国产精品99 gif | 2022国产精品自在线拍国产 | 日本高清在线一区二区三区 | 全黄H全肉短篇禁乱NP慕浅浅 | 99热只有这里有精品 | 久久久久久综合对白国产 | 国产精品久久久久久久上海公司 | 朱可娃传| 秋霞久久网 | 国产精品刺激好大好爽视频 | 99国产精品高清一区二区二区 | 亚洲日本香蕉视频观看视频 | 影音先锋每日最新AV资源网 | 久久不卡一区 | 亚洲精品国产自在现线最新 | 五月婷婷丁香在线 | 色迷迷网站 | 日韩精品无码一区二区免费A片 | 精品日韩二区三区精品视频 | 内射爆草久久爱 | 黃片小视频免费 | 亚洲在线国产日韩欧美 | 新版天堂中文资源8在线 | 久久免费看少妇高潮A片JA小说 | 中文字幕动漫精品专区 | 午夜性色| 91精品福利视频 | 国产黄色免费观看 | 亚洲最大激情中文字幕 | 秋霞成人无码免费A片 | 黑人巨大两根一起挤进A片小说 | 波多野结衣一区二区三区 | 在线网站黄色 | 中文字幕亚洲欧美一区 | 日本高清视频在线免费观看 | 日本xxxxx18护士xxx | 桃色AV久久无码线观看 | 日本无码一区二区二区 | 日韩精品一区二区三区AV在线观看 | 欧美区在线 | 国产精品中文字幕在线 | 手机在线看黄 | 五月婷婷综合激情 | 午夜影视在线视频观看免费 | 免费看成人A片无码网站 | 果冻制作传媒免费版 | www.欧美色| 巜疯狂的少妇4做爰BD播放 | 91精品全国免费观看青青 | 无码又爽又刺激A片涩涩动漫软件 | 吃奶边摸叫床刺激A片视频 抽插内射高潮呻吟爆乳 | 视频二区 调教中字 知名国产 | 能看的黄色网址 | 九九久久国产精品大片 | 嫩草影院一二三区入口首页 | 国产第一页视频 | 亚洲精品tv久久久久久久久久 | 综合久久久久综合97色 | 国产成人精品影视 | 越南护士毛茸茸性 | 最近最新高清中文字幕 | 亚洲AV色香蕉一区二区三区 | 黑人欧美巨大xxxxx69 | 精品久久综合1区2区3区激情 | 精品视频 | 午夜精品视频在线观看 | 香蕉综合视频 | 五月婷婷久久草丁香 | 国精产品888 | 伊人久久五月丁婷婷 | 一区二区三区免费看A片 | 极品妇女扒开粉嫩小泬 | 最近韩国动漫HD免费观看 | 日本最新中文字幕 | 男人午夜 | 国精品午夜不卡福利 | 一本色道亚洲精品久久 | 日日摸天天添天天添无码蜜臀 | 国内精品久久久久久久久久久久 | 欧美老妇性生活 | 88av免费观看入口在线 | 日本人伦一区二区三区 | 色五婷婷 | 人妻熟女 视频二区 视频一区 | 亚洲播播 | 人人插97| 青青草国产v片 | 日本高清二区 | 四虎影院211风情影院 | 国产成人福利免费观看 | 欧美精品久久 | 18禁裸乳无遮挡免费网站 | 国精产品一二二区视早餐有限 | 一起探恋爱综艺在线观看第七期 | 国产精品玖玖玖影院 | 美欧毛片 | 欧美激情视频二区 | 久久视精品| 伊人成综合网伊人222 | 夜夜天天 | 丰满人妻妇伦又伦精品国产 | 一区二区三区四区在线免费观看 | 有没有毛片网站 | 国产做爰又粗又大太疼了 | 日日淫| H高潮嗯啊娇喘抽搐A片男男视频 | 欧美性猛交99久久久久99 | 日韩欧美高清DVD碟片 | 亚洲精品久久久久无码AV片软件 | 国产一区二区精品视频 | 欧美日韩精品一区二区三区视频 | 精品无码国产一区二区日本 | 国产一区高清视频 | 亚洲清色 | 国产SUV精二区69 | 97天天干 | 日韩欧美国内 | 日本一区二区三区在线观看网站 | 色人阁综合 | 精品国产人妻国语 | 天天综合在线视频 | 日韩在线av免费视久久 | 在线成年av动漫电影 | 一级a级毛片 | 伦理片免费秋霞e | 波多野结衣系列在线 | 亚洲成人国产 | 黄网站在线播放 | 免费看啪啪人A片AAA片玩具 | 99日影院在线播放 | 久久99久久精品国产只有 | 久热首页 | 日韩一本在线中文字幕 | 精品毛片| 内射调教小说高H1V1姐弟 | 国产真实自拍 | 九九九九在线精品免费视频 | 最近免费字幕中文大全视频 | 97国产无遮挡A片又黄又爽小说 | 在线亚洲天堂 | 久久久精品国产免费观看同学 | 精品久久久久中文字幕日本 | 好硬啊一进一得太深了A片 好涨好爽好大视频免费 | 被黑人做的白浆直流 | 亚洲国产精品久久网午夜 | 色网综合 | 日本公妇里乱片A片在线播放保姆 | 五十六十熟女猛烈交尾A片一 | 婷婷四房综合激情五月性色 | 黄页网站在线播放 | 干色网| 九九热九九热 | 欧亚乱熟女一区二区在线 | h片在线免费观看 | 国产国产人免费人成成免视频 | 娇妻的呻吟梦颖完整版 | 在线观看免费播放网址成人 | 亚洲精品一区无码A片 | 久久久综合九色综合中文字幕 | 亚洲午夜久久久久久91 | 日本无码人妻一区二区色欲 | 国内精品久久久久久 | 亚洲午夜影视 | 国产人妻一区二区无码 | 欧美日韩永久久一区二区三区 | 精品香蕉99久久久久网站 | 午夜视频hd | 三级中国免费的 | AV性色AV久久无码AI换脸 | 日本在线高清不卡 | 香蕉97| www.片| 99久久久无码国产精品免费砚床 | 久久99国产精品成人 | 精品熟女少妇AV久久免费软件 | 99视频在线看观免费 | 国产精品久久久久无码人妻网站 | 日本女同在线 | 8x视频在线 | 免费无码又爽又刺激A片小说 | 韩国三级香港三级日本三级la | 成人午夜在线视频 | 无码AV动漫精品一区二区免费 | 日本久久综合视频 | 天美传媒国产剧影视公司 | 五月婷婷六月色 | 色偷偷资源 | 女网址www女影院 | 国产熟女一区视频在线播放 | 日产2021免费一二三四区在线 | 国产精品久久久久久久上海公司 | 国产精品186在线观看在线播放 | 少妇做爰特黄A片免费看 | 精品综合久久久久久99 | 国产精品扒开腿做爽爽青涩情侣 | 中国字幕免费观看 | 高清欧美性狂猛bbbbbbxxxx | 视频在线观看大片 | 米奇第四色色情 | 免费视频1 | 欧美激情在线一区二区三区 | 天堂中文在线网 | 国产ts在线视频 | 国第一产在线精品亚洲区 | 韩国乱理片中文字幕在线播放 | 91情国产l精品国产亚洲区 | 国产在线观看免费观看 | 亚洲日本免费 | 深夜福利欧美 | 色播五月激情五月 | 丁香六月深婷婷激情五月 | 国内外成人色情视频 | 国产精品久久久久久小说 | 欧美在线观看 cao38 | 人人操在线播放 | 97人伦色伦成人免费视频 | 国产精品亚洲精品久久品 | 亚洲在线2018最新无码 | 亚洲午夜无码毛片AV久久小说 | 午夜性做爰电影 | 精品AAAA巨乳 | 九九99 | 国产在线精品亚洲第一区 | 春雨电影大全免费观看在线播放 | 高清一区二区不卡视频 | 国产亚洲精品久久20242024 | AV亚洲AV永久无码精品网 | 亚洲A片无码一区二区蜜桃久久 | 黄网在线免费观看 | 免费又粗又硬进去好爽A片 免费又色又爽又黄的视频 免费中文字幕囯产在线网站 | 韩国一区二区视频 | 免费无码又爽又刺激A片软软件 | 男人J进女人P | 天堂资源8中文最新版 | 国产成人精品免费久久久久 | 国产精品扒开腿做爽爽爽王者A片 | 成人国产色情无码永久免费软件 | 樱花树下未删减在线观看 | 亚洲v欧美v日韩v国产v | 国产在线综合色视频 | 单亲真实乱子伦免费视频 | 欧美日韩精品一区二区三区视频在线 | 天天综合网天天做天天受 | www.色婷婷| 成人永久免费视频网站APP | 色社区| 国产福利视频在线观看福利 | 国产国语特级 a毛片 | 国产一区二区精品尤物 | 青青青国产在线观看手机免费 | 99精品全国免费7观看视频 | 久久频这里精品99香蕉久网址 | 高辣H文短篇啪啪小说男男 高辣H文黄暴糙汉文H文 | AV久久AV蜜臀AV色欲 | 久久精品韩国三级 | 国内精品一卡二卡三卡抖 | 中国人xxxxbbbb国产 | 狠狠色丁香久久综合五月 | 欧美一级va在线视频免费播放 | 97超碰护土香蕉 | 精品蜜臀AV在线天堂 | 国精品日韩欧美一区二区三区 | 日本道专区无码中文字幕 | 日韩a片 | 性色aⅴ在线观看swag | 女人十八毛片A级十八女人 女人十八毛片A片久久18 | 欧美最猛性xxxxx亚洲精品 | 激情四房| 欧美色综合高清视频在线 | 一本一道久久综合网 | 亚洲精品久久久无码大桥未久 | 午夜精品射精入后重之免费观看 | 国产老肥熟| 亚洲精品成人AV在线观看爽翻 | 色网站观看| 91制片厂制作果冻传媒麻豆 | 日本三级带日本三级带黄国产 | 日日摸夜夜添夜夜添影院视频 | 小泽玛利亚全集快播 | 将军强势求欢(高H) 交换邻居波多野结衣中文字幕 | 欧美午夜一区 | 日韩高清在线中文字带字幕 | 澳门一级毛片手机在线看 | 开心婷婷网 | 国产AV天堂亚洲AV麻豆 | 日本三级2019在线观看免费 | 国产伊人网 | 国产成人亚洲综合a∨婷婷 国产成人亚洲综合91精品555 | 综合色久| 国内自拍99 | 好紧再快点好深好爽视频 | 综综综综合网 | 好色网| 久久永久视频 | 亚洲六区| 制服丝袜99 | 欧美又粗又长A片XXOO在线看 | 影音先锋男人在线资源资源网 | 日本一区二区三区在线视频观看免费 | 免费网站在线观看人数在哪网站 | 糙汉顶弄抽插HHHH | 久久国产一片免费观看 | 黄色网页在线看 | 亚洲AV无码久久精品色欲 | 一区二区三区欧美日韩 | 葫芦娃.combo3.0深夜释放自己 | 久久久国产麻豆 | 天天插天天| 99久久综合精品国产 | 国内精品久久久久久久999下 | 久精品视频村上里沙 | 日本jizzjizz| 69精品视频 | 欧美日本日韩aⅴ在线视频 欧美日本日韩 | 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 | 老司机深夜福利视频 | 精品一卡2卡三卡4卡三卡免费 | 中文字幕日本亚洲欧美不卡 | 国产精品色情一区二区三区 | 乖宝真紧H太好C了H 灌饱娇嫩H将军公主最新章节 | 秋霞韩国伦理电线看 | 亚洲精品欧美精品 | 成人激情小视频 | 91极品视频在线观看 | 99re免费视频精品全部 | 豪妇荡乳1一5杨贵妃 | 波多野结衣视频一区 | 日韩精品视频免费观看 | 二次元美女开腿污裸体 | 日本a∨在线播放高清 | 秋霞91 | 日韩伦理电影在线免费观看 | 在线观看国产黄色 | 大战丰满老熟妇重囗味视频 | 抖音app国产污 | 国产偷抇久久精品A片图片 国产偷国产偷亚州清高APP | 少妇交换做爰6 | 蜜桃少妇AV久久久久久久 | 国产亚洲精品久久久一区 | 亚洲第一毛片 | 一本色道久久综合亚洲精品 | 久久夜夜操妹子 | 美女内射视频WWW网站午夜 | 99久久国产露脸精品麻豆 | 久久精品99国产精品日本 | 日本一道一区二区视频 | 一区二区中文字幕在线观看 | 韩国青草视频19禁福利 | 国产乱女乱子视频在线播放 | 国语自产拍在线观看偷拍在 | 小蝌蚪视频app无限看 - 丝瓜ios视频丝瓜视 | 亚洲精品久久久久久久久AV无码 | 伊人情人网 综合 | 欧美亚洲色倩在线观看 | 91热久久免费精品99 | 久久久综合香蕉尹人综合网 | 免费观看中文字幕午夜理论 | 欧美阿v高清资源不卡在线播放 | 五月天国产精品 | 无人视频免费观看免费直播下载 | 国产精品国产三级在线专区 | 隔壁人妻偷人BD中字 | 乱肉合集乱500篇小说奶水 | 无毒成人网站网址 | 亚洲福利影视 | 国产a级三级三级三级 | 精品久久一区二区 | 国产三级在线观看视频 | 最近中文字幕在线视频1 | 午夜精品久久久久久久99热 | 一级在线视频 | 一本二本三本AV亚洲电影 | 日韩精选 | 成人久久18免费软件 | 久干网 | 熟女少妇人妻中文字幕 | 亚洲综合在线最大成人 | 亚洲精品欧美精品 | 97在线播放| 成人做爰A片免费视频日本 成人做爰视频WWW网站 | 日本最新免费的一区二区 | 国产综合色在线视频播放线视 | 国产精品伦理久久久久久 | 亚洲熟女乱色综合一区小说 | 国产农村熟妇出轨VIDEOS | 精品无码无人网站免费视频 | 亚洲精品久久久AV无码专区 | 国产午夜亚洲精品区 | 国产乱码精品一区三上 | 97人妻成人免费视频 | WWW色情成人免费视频软件 | 桃子视频免费观看完整版HD | 孤零飘落燕 下载 | 王梦溪 bt | 亚瑟影院在线观看wwww | 太色了影视| 亚洲AV无码精品蜜桃 | 欧美精品hdvdeosex4k | 国产一区二区三区成人久久片 | 亚洲精品AV无码喷奶水糖心 | 一级女人毛片人一女人 | 久久视频精品38线视频在线观看 | 欧美 国产 日韩 另类 视频区 | 免费看黄的片多多APP下载 | 国产高清在线91福利 | 五月亭亭免费高清在线 | 99re视频精品全部免费 | 日本a在线播放 | 污污内射久久一区二区欧美日韩 | 国产天天操 | 免费看黄色一级片 | 亚洲精品国产第一区第二区 | 日本高清无卡码一区二区久久 | 91日本在线观看亚洲精品 | 国产日产久久 | 毛片免费全部免费观看 | 国产不卡在线 | 欧美三级黄色大片 | 久久受| 欧美乱子YELLOWVIDEO | 国产瑜伽白皙一区二区 | 精品国产乱码久久久久久夜深人妻 | 一级毛片美国 | 国产片久久| 做A爰片久久毛片A片的价格 | 蜜桃臀无码AV在线观看 | 日本欧美大码aⅴ在线播放 日本欧美不卡一区二区三区在线 | 泷川雅美的不雅视频 | 午夜福利视频 | 色网在线 | 日本又黄又无无遮无码视频 | 欧美操美女 | 伦理电影在线看 | 日本免费www | 亚洲电影 欧美电影 | 女人下边被添全过程A片图片 | 太粗啦太硬了受不了 | 国产午夜精品AV一区二区麻豆 | 80电影天堂网香蕉视频 | 亚洲精品久久片久久久久 | 日本韩国视频在线观看 | 国产精品呻吟AV久久高潮 | 久久青草国产手机看片福利盒子 | 风韵人妻丰满熟妇老熟女 | 偷偷狠狠的日日高清完整视频 | 好硬啊进得太深了A片无码公司 | 91福利一区二区 | 中文字幕在线视频免费观看 | 秋香蕉丝瓜榴莲污APP下载 | 色婷婷中文字幕在线一区天堂 | 91精品一区二区三区在线观看 | 欧美激情内射喷水高潮 | 四虎在线视频免费观看视频 | 99re免费| 免费高清岛国在线观看 | 嗯啊WW免费视频网站 | 亚洲日本中文字幕 | 牛牛本精品99久久精品88m | 欧美色久 | 欧美色偷偷亚洲天堂bt | 真人一进一出抽搐无遮挡 | 免费中文字幕在线 | 7777色 | 免费观看色视频 | 日日噜噜夜夜狠视频免费 | 欧美黄黄黄AAA片片 欧美黄色免费网址 | 久久久中日AB精品综合 | 经典国产乱子伦精品视频 | 开心五月 激情五月 深爱五月 | 色网站在线播放 | 在线观看网址入口2024 | 在线 亚洲 欧美 专区看片 | 国内精品久久久久久中文字幕 | 国产在线视频在线 | 免费高清资源黄网站在线观看 | 色无极亚洲色图 | 成 人 网 站免费观看 | 国产亚洲精品久久7777777 | 欧美在线观看第一页 | 和黑人高潮了10次A片 | 东北老女人大叫爽死啦 | 国产精品综合 | 在线看黄网站 | 黑人啪啪 | a级片日韩 | 2024夜夜干天天天爽 | 日韩精品免费在线观看 | 天天干天天干天天操 | 家庭教师波多野吉衣 | 亚洲 日韩 另类 天天更新 | 东京热主页| 97密挑| 日本丰满人妻无码中文字幕 | 999国产精华是正规产品吗 | 另类专区av无码 | 久久一级视频 | 奇米四色在线视频 | 久久精品久久精品久久 | 亚洲一卡久久4卡5卡6卡7卡 | 成人A片免费看男人社区 | 日韩A片无码毛片免费看久久 | 久久久乱码精品亚洲日韩小说 | 四虎无码永久在线影库网址一个人 | 日本理论片和搜子同居的日子GOOD | www.午夜精品| 精品一卡2卡三卡4卡三卡免费 | 精品国产一区二区三区不卡 | 四四房播播 | 91丝袜在线播放 | 欧美性爱 综合 | 婷婷色九月综合激情丁香 | 激情文学另类小说亚洲图片 | 特级毛片绝黄A片免费播冫 特级毛片在线大全免费播放 | 久久福利资源网站免费看 | 中国黄色毛片 | 我和岳疯狂性做爰全过程 | 亚洲精品中文字幕无码A片蜜桃 | 99国产成人高清在线视频 | 日本又色又爽又黄的A片视频免费 | 国产全黄a一级毛片视频 | 波多野结衣日韩 | 欧美丰满熟妇无码XOXOXO | 欧美操操网 | 国产精品久久久久久久久久一区 | 涩涩动漫网站入口 | 少妇寂寞找男按摩师性M | 99福利视频 | 精品久久一区 | 成人18免费网站 | 色婷婷六月亚洲婷婷丁香 | 麻豆天美 | 乱护士肉合集乱500篇 | 日韩欧美一区二区三区不卡 | 国产精品久久久久久日本 | 忘忧草在线影院WWW日本社区 | 亚洲国产成人久久三区 | 国产传媒免费看A片 | 亚洲AV国产国产久青草 | 中文国产成人精品久久app | 西西人体全身祼体图片 | 国产悠悠视频在线播放 | 亚洲午夜久久久无码精品网红A片 | 欧美色网络 | 在线观看的免费网站 | 欧美疯狂做受xxxxx喷水 | 麻豆国产传媒18精品A片 | 天堂网www在线中文天堂 | 中文字幕中文字幕在线 | 久久久GOGO无码啪啪艺术 | lme伦敦金属交易所实时行情 | 波多野结衣免费在线视频 | 在线天堂中文最新版资源天堂 | 中文字幕在线观看亚洲视频 | 浪妇叫床叫的很浪的小说 | 国产精品日产三级在线观看 | 欧美成熟毛茸茸复古 | 久久国产一区二区三区 | 天堂√在线中文资源网 | 日产乱码一卡二卡三免费 | 亚洲精品久久国产高清情趣 | 成人禁片免费播放35分钟 | 翁公又大又粗挺进了我 | 97久久伊人精品影院 | 亚洲天堂资源 | 麻豆传煤官网入口免费进入 | 不卡的毛片| 第四色网主页 | WWW国产亚洲精品久久久日本 | 一级做a爱过程免费视频时看 | 丁香花五月婷婷 | 久久精品国产日本波多麻结衣 | 欧美色性| 性一乱一交一A片视频 | 特级毛片在线大全免费播放 | 亚洲永久在线观看 | 真实露脸国产熟妇熟年妇人视频 | 国产视频精品免费 | 国产女同精品 | 日本生活片69视频 | 麻豆精品 | 毛片无码一区二区三区A片视频 | 国产色精品久久人妻无码看 | 荡公乱妇第1章方情全文免费 | 亚洲AV无码A片一二三区 | 酒色网最新网址 | 2022国产成人福利精品视频 | 国产亚洲精品VA片在线播放 | 免费国产麻豆传 | 久久久国产人妻精品 | 苍井空快播 | 欧美黑人xxxx | 工口h全彩无遮挡 | 色综合久久精品亚洲国产消防 | 国产伦子系列沙发午睡 | 井上真央av| 国产人妻无码专区精品 | 亚洲18岁禁止 | 亚洲五月花 | 波多野结衣a v免费观看 | 91传媒蜜桃香蕉在线观看 | 91观看| 天堂新版在线资源 | 亚洲精品入口一区二区乱麻豆精品 | www好男人精品视频在线观看 | 免费成人伦理电影 | 蝌蚪蚪窝视频在线视频手机 | 国产精品大全 | 少妇大叫太大太爽受不了在线观看 | 色综合久久精品亚洲国产 | 国产精品久久久久久影院 | 你好种地少年免费观看完整版 | 欧美香蕉人人人人人人爱 | 国产超碰AV人人做人人爽 | 国产SUV精品一区二AV18款 | 91精品乱码一区二区三区 | 欧美午夜性 | 四虎影视在线影院在线观看免费视频 | 国精品产露脸偷拍视频 | 欧美日韩视频二区三区 | 婷婷丁香激情 | 国产人妻人伦精品免费看果冻传媒 | 国产精品反差婊在线观看 | 一区二区三区精品牛牛 | 窝窝社区精品免费视频 | 最新资源资源影音先锋 | 网站黄色免费 | 91po国产在线精品免费观看 | 狠狠干夜夜 | 伦理片琪琪影院免费观 | 久久国产AVJUST麻豆 | 美女久久久久久久久久久 | 国产精品免费视频一区二区三区 | 韩国三级香港三级日本三级la | 亚瑟在线中文影院 | 三级com | jizz性欧美2| 亚洲日本香蕉视频观看视频 | 亚洲精品无码成人A片九色播放 | 久久66热在线视频精品 | 免费韩国一卡二卡三卡四卡 | 亚洲色婷婷久久精品AV蜜桃小说 | 韩国三级日本三级在线观看 | 久久无码人妻中文国产AV | 国产自国产自愉自愉免费24区 | 国产精品爽爽久久久久久 | 中文字幕久久久久一区 | 波多野结衣在线视频观看 | 男男挤奶油进去PLAY高污 | 国产片AV片永久免费观看 | 少妇看A片偷人精品视频 | 国产特黄特色a级在线视频 国产素人自拍 | 六月丁香色婷婷 | 久久精品一本到99热免费 | 一区二区传媒有限公司 | 熟女乱牛牛视频在线观看 | 0855午夜福利伦理电影 | 无码毛片A片-区二区三区 | 欧美XXXX三人交性A片 | 女人自熨全过程(有声) | 久久久精品国产免费观看同学 | 辽宁老熟女高潮狂叫视频 | 一体一道久久88色合综合网 | 韩剧甜性涩爱 | 日韩不卡一卡二卡3卡四卡2021免费 | 国自产拍偷拍精品啪啪一区二区 | 大陆老太交xxxxxhd在线 | 久久日韩精品无码一区 | 国产熟妇BBWBBWBBW歼尸 | 欧美又粗又嫩又黄A片成人 欧美躁天天躁无码中文字 欧美真人性做爰一二区欧美影院 | 欧美天天在线 | 四虎永久在线精品国产免费 | 男人和女人做爽爽视频免费 | 国色精品卡一卡2卡3卡4卡免费 | 亚洲自偷精品视频自拍 | 免费国产凹凸在线视频 | 人禽无码做爰在线观看 | www.日日爱| 午夜免费无码福利视频麻豆 | 一区二区三区四区在线免费观看 | 最近更新2019中文字幕 | 午夜副利电影手机高清在线直播app下载 | 最近新免费韩国电影高清 | 青草资源| 干一干操一操 | 亚洲国产中文视频二区 | 麻豆国产精品AV色拍综合 | 网站三级 | 久草在在线免在线观看视频 | 翁公的巨物挺进了密进 | 亚洲国产天堂久久精品网 | 欧美乱xxxxxxxxx | 超乳w真性中出し冲田杏梨101 | 国产一区二区三区在线视频 | 国产成人综合亚洲亚洲欧美 | 97在线线免费观看视频在线观看 | 国产91香蕉成人app软件 | 比较刺激的H公共场合小说 边吃奶边狠狠躁日韩A片 | 国内电影 | 国产精品久久久久久亚洲影视 | 欧美亚洲日本国产 | 欧美丰满少妇久久无码精品 | 黑人大操白富美 内射 | 国内一级黄色片 | 果冻传媒入口 | 天天干狠狠干 | 欧美日韩在线视频免费完整 | 国产日韩中文字幕 | 天堂在线v| 黄网在线播放 | 在线综合亚洲中文精品 | 人妻.中文字幕无码 | av线上免费观看 | 999热| 大胆日本无码一区二区 | 日本国产一区二区三区 | 伊人福利 | 另类 校园 人妻 武侠 | A级成人毛片免费视频高清 a天堂v | 国产又黄又湿又刺激不卡网站 | 日本a级三级三级三级久久 日本a级片视频 | 99精品热视频 | 五月天婷婷免费观看视频在线 | 二级毛片在线观看 | 国产亚洲精品成人久久网站 | 巜疯狂的少妇4做爰BD小说 | 青青伊人91久久福利精品 | 国产在线观看首页123 | 亚洲熟女片嫩草影院 | 真实国产乱子伦视频对白 | 亚洲精品国产成人无码区A片 | 成人区色情综合小说 | 午夜电影网 | 免费国产视频 | 国产a级特黄的片子视频免费 | 亚洲免费网站观看视频 | 黄色一级性生活视频 | 日韩美女视频一区 | 777影院理伦片片 | 美国黄色毛片一级 | 四虎影视免费观看高清视频 | 国产亚洲精品AV片在线观看播放 | 日韩免费视频播放 | 中文在线资源链接天堂 | 伊人网在线观看 | www.伊人网| 在线高清无码欧美久章草 | 欧美又粗又黄又硬的A片 | 欧美日韩国产一区二区三区不卡 | 老湿影院视色情下 | 亚洲视频久久 | 少妇被躁爽到高潮无码麻豆AV | 九九精品成人免费国产片 | 免费网站日本永久免费观看 | 97在线观看免费版高清 | 欧美一级精品高清在线观看 | 吉泽明步 超m自缚痴女 | 免费在线成人电影 | 婷婷综合色五月久丁香 | 九九九色情成人免费网 | 狠狠cao在线视频观看 | 黄色一级小视频 | 日本哺乳期xxxxhd奶水 | 婷婷中文网 | 蜜臀AV久久国产午夜福利软件 | 岛国黄色网址 | 日本中文字幕不卡 | 在线视频 日韩 | 亚洲一区二区三区四区五区六 | 日韩城人网| 国内久久久久影院精品 | 国产一二三四区在线观看 | 国外卡一卡二卡三免费专区 | jizzjizz免费 | 国产乱码精品一区二区三上 | 理论片87福利理论电影 | 亚洲AV综合AV国产AV中山 | 一级久久 | 日韩欧美精品一区二区三区 | 2020亚洲 欧美 国产 日韩 | 伧理片午夜伧理片毛片日本 | 日韩伊人网 | 欧美乱妇15p辣图 | 国产毛A片啊久久久久久保和丸 |