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

enciclopédia

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

hw

13 Oct 2025(atualizado 13/10/2025 às 13h28)

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

Temas

Compartilhe

How_to_feel_like_an_Olympian_in_your_50s.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 hat 1 slotits 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

Your fast fashion could end up as this beach trash.txt

How_did_a_Civil_War_era_prostitute_become_extra_rich.txt moda e os abrangente abrangente.

GRáFICOS

nos eixos

You_did_it_how_doctor_realised_mushroom_cook_Erin_Patterson_was_a_killer.txt

How_much_cash_is_the_US_raising_from_tariffs.txt explorar e os conhecimento abrangente.

Navegue por temas

How_to_maintain_your_strong_voice_on_lower_notes.txt How_to_make_pizza_like_a_Neapolitan_master.txt How_the_first_sensational_picture_of_Lady_Diana_came_about.txt How_safe_is_frozen_fruit.txt How_to_help_your_audience_feel_the_words_youre_singing.txt How_beetroot_can_enhance_your_performance.txt How_the_risky_Brazilian_butt_lift_hit_the_big_time.txt How_to_make_pizza_like_a_Neapolitan_master.txt How_carbon_has_gone_out_of_fashion.txt How_the_worlds_first_accountants_counted_on_cuneiform_-_BBC_News.txt
青青热久免费精品视频在app | 日本三级香港三级网站 | 亚洲精品卡2卡3卡4卡5卡区 | 天堂亚洲网 | 成人午夜又粗又硬又长 | 久久久久久久久66精品片 | 久久精品国产日本波多野结夜 | 伧理片午夜伧理片 | blacked欧美黑粗硬大free beeg -日本 beeg.黑人 | 珠帘玉幕电视剧免费观看 | 国产一区二区久久A片免费 国产一区二区三不卡高清 国产一区二区三区A片在表 | 小小水蜜桃视频高清在线观看1 | i91media果冻传媒 | 亚洲精品久久久久久成人 | 夜夜操夜夜骑 | 国精产品W灬源码1688网站 | 国产3级在线观看 | 午夜视频hd | 久久99精品国产一区二区三区 | 三个馊子伦着玩小说冫 | 夜夜操狠狠干 | 免费被黄动漫网站在线无网观看 | 婷婷综合色 | 天美传媒新剧国产网站 | 日韩福利视频一区 | 91av视频在线观看 | 欧美精品一区二区在线观看 | 国产乱码精品一区三上 | 在线一二三区国产色情无码电影 | 人妻被粗大猛进猛出69国产 | 桃子视频免费观看完整版HD | 亚洲日韩aⅴ在线视频 | 天天看天天干 | 国产精品免费视频一区二区三区 | 人人影视在线 | 亚洲欧美日韩国产精品第不页 | 国产AV午夜精品一区二区入口 | 亚洲人成一区二区不卡 | 国产一区在线播放 | 久久精品亚洲欧美日韩久久 | 波多野结衣在线观看视频 | 亚洲一区二区在线视频 | 好看的日本电影 | 清纯校花挨脔日常H惩罚视频 | 精品国产3p一区二区三区 | 色丁香色婷婷 | 老司机试看午夜 | 天堂√最新版中文在线天堂 | 娇喘潮喷抽搐高潮麻豆A片 娇喘呻吟欲仙欲死的娇妻 娇妻被朋友玩得呻吟在线电影 | 国产乱码卡1卡二卡3卡4卡5 | 国产目拍亚洲精品一区二区 | 嗯 好深 啊 用力 哦 嗯 啊视频 | 好硬好湿好大再深一点动态图 | 精品欧美一区视频在线观看 | 99re热这里只有精品视频 | 日本不卡免费高清视频 | 99精品久久精品一区二区小说 | 国产成人精品久久一区二区三区 | 亚洲欧美一区二区三区麻豆 | 欧美一区二区三区不卡 | 日本免费一区高清观看 | 肉乳乱无码A片观看免费 | 双腿挂他肩上撞击轻哼 | 午夜免费视频网站 | 亚洲一级特黄特黄的大片 | 国产亚洲精品久久久久久久软件 | 高清视频在线观看WWW | 免费无限次永久看黄的APP | 免费一级做a爰片久久毛片 免费一级特黄欧美大片久久网 | 一本到高清无码中文在线 | 你他妈别舔内射视频免费 | 黑人巨茎大战欧美白妇 | 日韩网站在线观看 | 久色亚洲 | 国产乱码一区二区三区 | 国产日韩欧美另类重口在线观看 | 久久精品免费视频观看 | 最新国产中文字幕 | 黄网国产| 亚洲精品久久无码一区二区大长腿 | 亚洲精品久久久久69影院 | 久久免视频 | 成人午夜精品网站在线观看 | 偷拍自伦2018 | 一级做a爱视频 | 亚洲黄色免费在线观看 | 欧美做愛坉片 | 精品一卡2卡三卡4卡免费乱码 | 黄色三级毛片视频 | 拍拍拍无档又黄又爽视频 | 黄 色一 片 级 日本 | 色播欧美 | 亚洲视频自拍 | 久久精品国产99国产精偷 | 国产极品精频在线观看 | 青草视频在线观看免费视频 | 一本到12不卡视频在线dvd | 免费看电影网站 | 欧美亚洲色帝国 | 少妇大叫太大太爽受不了在线观看 | 亚洲视频自拍偷拍 | 天天操天天干天天摸 | 欧美躁天天躁无码中文字 | 大尺度做爰啪啪床戏男人小说 | 亚洲午夜精品A片久久WWW慈禧 | 日本韩国视频在线观看 | 在教室伦流澡到高潮H吃奶小黄书 | 亚洲精品无码成人A片在线漫画 | 国产亚洲精品久久久久的角色 | 亚洲人成综合在线播放 | 四虎日韩 | 国产在线精品亚洲观看不卡欧美 | 午夜18禁A片兔费看 五月综合视频 | 国产精品久久久久久亚洲毛片 | 精品久久一区二区三区 | 97视频在线观看免费 | 99无码熟妇丰满人妻啪啪 | 日本三级网 | 一道本在线观看视频 | 毛茸茸成熟亚洲人 | 苍井空三年级片网站 | 99久久久免费精品免费 | 2021韩国理论片在线观看私人影院 | 国产内射在线激情一区 | 亚洲在线中文字幕2 | 激情六月综合 | 色偷偷AV老熟女色欲涩爱 | 最爽最刺激18禁视频 | 欧美极品少妇XXXOOO图片 | 长篇肉戏香艳完本小说排行榜 | 波多野结衣中文字幕一区二区三区 | av免费网站不卡观看 | 久久久精品免费视频 | 伊人成综合人网 | 久久美女精品国产精品亚洲 | 欧美亚洲尤物久久精品 | 免费看片A级毛片免费看 | 国语对白清晰好大好白在线 | 日韩性做爰免费A片AA片 | 欧洲色情大片啪啪免费观看 | 久久综合九色欧美综合狠狠 | 日韩精品一卡2卡3卡4卡乱码 | 亚洲天堂2014 | 中文字幕一区二区三区精华液 | 日本亚洲色图 | 免费人成黄页在线观看日本 | 伊人222综合网图片 一色网 | 午夜性福利视频 | 欧美美女一区二区三区 | 色搜网站| 无码爽大片日本无码AAA特黄 | www.亚洲视频| 国产亚洲精品久久久久久线投注 | 春色校园综合网 | 免费高清欧美视频在线 | 久操精品视频 | 日本黄页88网成品网站 | 午夜DJ影院在线观看免费完整高清 | 俺也去资源站 | 三级韩国日本三级在线 | 中文字幕日本无码少妇 | 女网址www女影院 | 国产精品V无码A片在线看小说 | 99热成人精品国产免男男 | 日本jizz在线播放 | 亚洲第一页乱 | 99国产午夜精品一区二区 | 中日韩一卡二卡三卡四卡在线观看 | 快点使劲舒服爽还要高清 | 色婷婷色综合缴情网站 | 国产午睡沙发系列大全 | 91网站免费 | 色噜噜狠狠狠狠色综合久 | 欧美色中色 | 岛国大片在线播放高清 | 久久综合久综合久久鬼色 | 乳交高H糙汉宠文 | 国产亚洲精品久久久久婷婷瑜伽 | 亚洲熟女片嫩草影院 | 免费看成人羞羞视频网站在线看 | 欧美精品videosex性欧美 | 在线观看国产黄色 | 久久夜色精品国产尤物 | 国产伦精品一区二区三区精品 | 久久66热人妻偷产国产 | 诱含整夜不拔h1v1 | 人人在线观看 | 2021久久精品99精品久久 | 68日本xxxxxxxxx视频图 | 色偷偷国色天香在线观看免费视频 | 国产精品久久久久久久久久98 | 中文字字幕在线乱码 | 精品久久久麻豆国产精品 | 成人网站免费观看 | 99亚洲精品卡2卡三卡4卡2卡 | 无码缴情做A爱片毛片A片 | 在线视频网站www色 在线视频色在线 | 网站在线 | 亚洲色噜噜狠狠站欲八 | youzljzljzljzlj96| 俺去也影音先锋播放 | 老师我好爽再深一点好舒 | 国产五月色婷婷六月丁香视频 | 国产精品黄在线观看免费软件 | 中文乱码字幕无线观看2024 | 日本精品一区二区三区无码 | 欧美最猛性xxxxx亚洲精品 | 熟女人妻久久中文字幕一二区 | 亚洲卡一卡二卡三乱码公司 | 色久久 | 99久久中文字幕伊人 | 被灌满了嗯不行NP | 91亚洲精品国产自在现线 | XL上司在线完整版无马赛克 | 国产成人啪午夜精品网站男同 | 最近中文字幕完整版视频在线看 | 97在线视频观看 | 免费观看黄色片 | 啊灬啊别停灬用力啊A片 | 在线视频www 777788 coom | 蝌蚪网在线视频 | 色琪琪av男人的天堂 | 五月天婷婷综合网 | 麻豆一区二区三区蜜桃免费 | 亚洲免费天堂 | 快播av电影网站 | 伊思人在线 | 亚洲熟女乱色一区二区三区 | 欧美国产日韩一区二区三区 | 清纯 唯美 制服 欧美 动漫 | 日本高清在线一区 | 国产99久久久国产精品小说 | 成人午夜视频在线观 | 人体女人xx | 精品无人区乱码一区二区三区手机 | 级毛片久久久毛片精品毛片 | 色www| 国产老肥熟 | 黄网13| 蜜桃麻豆WWW久久国产人妻 | 久久噜 | 亚精产品一三三菠萝蜜 | 香港三级日本三级妇三级 | 野花日本大全免费观看6高清版 | 7M精品福利视频导航 | 高清一区二区亚洲欧美日韩 | 成人亚洲欧美日韩在线观看 | 在线播放无码后入内射少妇 | 欧美很很干 | 日本一区二区三区四区在线观看 | 亚州色吧| 黄色一级片免费观看 | 日韩插啊免费视频在线观看 | 国产一级一级一级国产片 | 宅男午夜大片又黄又爽大片 | A片女女女女女女BBBB | 老司机精品福利在线资源 | 国内精品久久久久久不卡影院 | 亚洲欧美成人无码久久久 | 长篇yin荡乱合集小说免费阅读 | 亚洲精品一区二区三区无码A片 | 视频黄色在线 | 免费高清日本 | 中文字幕天堂中文 | 精品无人区乱码1区2区3区免费 | 91亚洲国产成人久久精品网址 | 国产在线精品亚洲观看不卡欧美 | 久久精品人人做人人爽97 | 97精品一区二区三区在线不卡 | 欧美日韩国产亚洲一区二区 | 玩弄人妻少妇500系列网址 | 丁香婷婷在线视频 | 亚洲国产熟妇无码一区二区三区H | 首页欧美日韩在线观看 | h视频免费 | 老熟女强人国产在线播放一区 | 污网站在线观看 | 综合五月婷婷 | 四虎影在永久在线观看 | 四虎影视在线看免费完整版 | 看全黄大色黄大片美女mmm | 美国毛片aaa在线播放 | 日韩精品极品视频在线观看免费 | 中国女人内谢69XXXXXA片 | 日本精品99 | 中文字幕无码一区二区免费 | 国产亚洲精品久久久无码网站 | 熟女人妻的味道 | 四房色播手机版 | 免费永久观看美女视频网站网址 | 日韩免费一区二区 | 黄色网址视频 | 欧美日韩精品一区二区 | 香蕉久久一区二区三区啪啪 | 国产69精品久久久久乱码韩国 | 窝窝视频网看免费 | 日本丰满人要无码视频 | 亚洲在线中文无码首页 | 亚洲精品第一国产综合野 | 国产香港特级一级毛片 | 麻豆AV久久无码精品久久 | 日韩亚洲全网最全无码 | 99热只有这里有精品 | 成 年 人 免 费 A V | 久久人妻AV一区二区软件 | 一区二区自拍 | 亚洲视频一区二区在线观看 | 黑人狂躁日本妞无码A片视频 | 国产又大又粗又硬的A片 | AV资源每日更新网站 | 最美白嫩的极品美女ASSPICS | 日本一区二区三区不卡在线看 | 欧美精品18videosex性欧美 | 欲女熟妇国产一区二区 | 国产人妻一区二区无码 | 欧美成视频 | a级伦理片 | 在线综合亚洲中文精品 | 色欲天天天综合网 | 亚洲国产在线精品国 | 亚洲国内自拍 | 在线成人精品国产区免费 | 麻豆精品一卡2卡三卡4卡免费观看 | 亚洲1卡2卡三卡3卡4卡网站 | 免费无遮挡无码永久在线观看视频 | 99je全部都是精品视频在线 | 免费无限次永久看黄的APP | 国产人妻一区二区无码 | 国产老师开裆丝袜喷水漫画 | 国产成人自产拍免费视频 | 91av综合| 日本精品久久久久中文字幕 | 日本一卡二卡三卡四卡免IOS | 精品香蕉久久久爽爽韩国 | 波多野结衣xfplay在线观看 | 婷停五月深爱五月 | 色114导航 | 91制片厂制作果冻传媒麻豆 | 久久久精品国产 | 色狠狠狠狠综合影视 | 波多野结衣强奷系列在线观看 | 国产精品一区在线麻豆 | 欧美激情bbbbbxxxxⅹ | 日韩中文字幕精品久久 | 国产强伦姧人妻电影 | 亚欧日韩毛片在线看免费网站 | 成年人黄国产 | 波多野结衣久久精品免费播放 | 高清AV熟女一区 | 疯狂少妇2做爰完整版播放 疯狂少妇2做爰中文字幕 | 日韩不卡在线播放 | 成人影视| jizzjizz免费 | 女同学粉嫩无套第一次 | 久久精品AV一区二区无码 | 国产又色又爽在线观看 | 亚洲精品日韩一区二区电影 | jizzjizzjizz丝袜老师 | 日本一本久 | 春雨电影大全免费观看在线播放 | 久久精品国产亚洲欧美 | 欧美精品手机在线 | 黄网页在线观看 | 日韩精品欧美在线视频在线 | 久久厕所精品国产精品亚洲 | 日韩精品欧美激情亚洲综合 | 别停好爽好深好大好舒服视频 | 最好看的韩国日本免费 | 日本免费一区高清观看 | 国产精品爱久久久久久久电影 | 日韩精品你懂的在线播放 | 啪啪电影网 | 亚洲午夜精品久久久久久抢 | A片粗大的内捧猛烈进出AV | 爽吗你个小浪货叫大声点 | 日本搞逼 | 日本成人区 | 日本一区二区免费看 | 日韩少妇成熟A片无码专区 日韩视频www色情 | 99久久久精品| 无码人妻精品国产婷婷 | 欧美午夜精品A片一区二区HD | 少妇无码吹潮久久精品AV网站 | 日本少妇做爰免费视频网站 | 嗯灬啊灬把腿张开灬A片视频网站 | 国产人妻人伦AV又粗又大 | 欧美久久久久 | 国产精品剧情 | XL司令第一季全集在线观看 | 波多野结衣一区2区3区 | 三级在线不卡 | 美女扒开下面让男生桶白浆 | 欧美性视频一区二区三区 | 久久一本色道综合 | 性色做爰片在线观看WW | 久9久9精品免费观看 | 一级毛片特级毛片黄毛片 | 欧美日韩乱妇高清免费 | 亚洲精品拍拍央视网出文 | 日韩黄色一级毛片 | 91欧美一区二区三区综合在线 | 亚洲AV无码一区二区色情蜜芽 | 国产欧美精品三区 | 久久亚洲精品高潮综合色A片小说 | 高清欧美不卡一区二区三区 | 色吧中文网 | 日韩在线视频导航 | 亚洲丁香婷婷 | 日韩二三区 | 波多野结衣伦理在线观看 | 欧美操日韩 | 日日撸.com| 青青草免费国产线观720 | 一个人在线观看的免费视频www | 天堂资源在线8 | 亚州少妇无套内射激情视频 | 毛片8| 无码做爰视频WWW网站建设 | 性欧美暴力猛交xxxxx高清 | 国产免费久久精品99久久 | 国产三级在线免费 | 免费看污又色又爽又黄又脏小说 | 日韩欧美一二三区 | 日本精品一区二区在线播放 | 国产又黄又爽又刺激的免费网址 | 狠狠狠色丁香婷婷综合久久俺 | 成人在线激情视频 | 精品久久成人免费第三区 | 韩国伊人 | 国产欧美日韩中文视频在线 | 国产人妻人伦精品一区二区 | 亚洲精品午夜一区二区电影院 | 日本a视频 | 欧美亚洲国产免费高清视频 | 色婷婷成人 | 久久亚洲精品高潮综合色A片 | 亚洲 日韩 国产 中文视频 | 色爽黄1000部免费软件下载 | 欧美日本一道高清二区三区 | 四虎影库884aa.cow | 色qing网站| 久久久久久a亚洲欧洲aⅴ | 影音先锋熟女少妇AV资源 | 一级国产视频 | 成人国内精品久久久久影院 | 国产99精品视频 | 亚洲久悠悠色悠在线播放 | 91精品国产91久久久久久最新 | 开心婷婷色 | 俺也来俺也去俺也射 | 欧美黄色免费网站 | 趴下让老子爽死你 | 成人毛片网站 | 国产色精品久久人妻无码看 | 99伊人网| 四虎影视在线看完整视频 | 爱唯侦察地址发布 | www.黄色网址.com | 久久精品无码人妻无码AV蜜臀 | 男子扒开美女尿口做羞羞的事 | 91精品国产高清久久久久 | 熟女人妻一区二区三区视频 | 亚洲精品成人AV在线观看爽翻 | 国产专区日韩精品欧美色 | 中文字幕在线永久视频 | 欧美黑人一区二区三区免费A片 | 男人天堂网2021 | 日韩中文字幕在线播放 | 精品无码人妻一区二区三区国产 | 国产亚洲精品久久久久久一区二区 | 在线国产中文字幕 | 国内精品中文字幕 | 俺也去在线观看视频 | 亚洲综合色婷婷 | 草草在线观看视频 | 伊人中文字幕波多野结衣 | 视频一区二区三区蜜桃麻豆 | 午夜激情影院 | 国产精品综合一区二区 | 永久无码日韩A片免费看麻豆精品 | 久久久久免费精品国产 | 中文有码人妻字幕在线 | 成人在线视频网站 | 91观看| 午夜福到在线100集 午夜福利1692免费视颍 | 色情成人韩国在线视频 | 99视频在线 | 日本精品在线视频 | 成人网站网址在线观看播放 | 欧美视频一区二区三区在线观看 | 亚洲视频在线观看2018 | 性一交一乱一交A片久久四色 | 午夜深夜福利网址 | 日韩伦理片 | 亚洲爆乳精品无码AAA片 | 日本污网站 | 在线视频网站你懂的 | 九九九色情成人免费网 | 彩途| 亚洲国产影院 | 国产亚洲国产bv网站在线 | 99麻豆精品国产人妻无码 | 阿娇艳Z门照片无码AV4I | 成人A片熟女人妻久久 | 女同网站在线观看免费 | 日韩精品中文字幕久久 | 黑人影院 | 两个人免费视频在线观看直播 | 人体内射精一区二区三区 | 色5天| 91传媒蜜桃香蕉在线观看 | 在线天堂中文最新版资源 | 精品乱码卡一卡2卡三免费 精品乱码久久久久久中文字幕 | 日本免费中文字幕 | 国产精品久久久久久久久久98 | 97亚洲狠狠色综合蜜桃 | 五月天婷婷缴情五月免费观看 | 国产成人AV大片大片在线 | 成年人黄视频在线观看 | 琪琪色原网20岁以下热热色原网站 | 成年黄网站免费大全毛片 | 蜜桃97ai| 久久这里只有精品免费播放 | 欧洲无线码免费一区 | 免费网站毛片 | 欧美国产激情二区三区-免费A片 | 少妇伦子伦精品无吗 | 国产精品成人无码A片免费网址 | 黄色网址视频免费 | 午夜DV内射一区区 | 久久天天躁日日躁狠狠躁 | 韩国最污禁网站免费观看 | 在线视频日韩精品 | 中国一级毛片视频免费看 | 日本黄页网 | 精品自拍农村熟女少妇图片 | 免费又黄又爽1000禁片 | 99国产午夜精品一区二区 | 国产免费福利 | 国产伊人久久 | 日韩不卡手机视频在线观看 | 天天干干天天 | 把手戳进美女尿口里动态图 | 国产卡一 | 中文字幕日韩精品一区口 | 寂寞午夜影院 | 日本乱码一卡二卡三卡永久 | 美国毛片毛片全部免费 | 男性影院 | 最刺激的乱l仑小说全集 | 小黄鸭app下载安装无限看丝瓜安卓苏州 | 伦理片在线观看午夜伦理电影韩国 | 色无五月 | YASEE亚瑟中文网在线 | 岳的下面好紧好爽视频 | 草草影院地址发布页ccyycom | 狠狠影院 | 久青草国产手机视频免费观看 | 能免费看的色情成人网址 | 91精品全国免费观看青青 | 少妇做爰特黄A片免费看 | 亚洲第一天堂网 | 婷婷色爱区综合五月激情韩国 | 黑人大战亚裔美女 | 欧美 日韩 国产 另类 图片区 | 中文字幕精品波多野结衣 | 日产精品一区到六区免费 | 无人影院在线播放视频 | 丁香八月婷婷 | 亚洲国产熟妇无码一区二区69 | 波多野结衣xxxx性精品 | 久久se视频精品视频在线 | 教官你的太大了芊芊h | 天堂网www天堂在线网 | 日本欧美一区二区三区乱码 | 日本三级一区二区 | 黄乱色伦 | 97人视频国产在线观看 | 久久99精品久久久久久秒播 | 日本特黄特色视频 | 国产高清精品91在线 | 上床网址 | 一区二区国产在线播放 | 里番a c g全彩 | 日本特黄特色视频 | 欧美极品欧美精品欧美视频 | 激情内射日本一区二区三区 | 国产精品免费看久久久 | 欧美色贴图 | 国产亚洲精品成人AA片小说 | 亚洲 第一区 欧美 日韩 | 亚洲一级电影 | 成人夜色视频网站在线观看 | 色网址之家123图片 色网址之家123 | 天堂网2021天堂手机版 | 久久九九有精品国产56 | 一本色道久久爱88A 一本色道久久爱88AV | 亚洲欧美视频 国内自拍 | 国产精品久久人妻无码网站一区无 | 夭天干天天做天天免费看 | 无码精品一区二区三区在线A片 | 野花社区wwW高清视频 | 最近最新中文字幕免费的一页 | 日本一卡二卡不卡视频查询 | 欧美视频在线观看网站 | 免费国产直接看片av | 中文字幕 欧美精品 第1页 | 最新高清无码专区在线视频 | 中国黄色免费网站 | 亚洲国产成人91精品 | 欧美亚洲免费久久久 | 无套内谢少妇毛片A片免 | 国产亚洲福利精品一区 | 日本三级观看高清免费 | AV色欲AV蜜臀AV久久 | 亚洲另类欧美在线电影 | 日本院线影片 | 亚洲欧美日韩国产专区一区 | 日本三级2019在线观看免费 | 久久九九少妇免费看A片 | 国产成年| 国产又色又爽又黄刺激在线视频 | 国产片国产片 | 国产麻豆剧看黄在线观看 | 最近最新2019中文字幕 | 亚洲成av人片在线观看 | 亚洲精品第一页中文字幕 | 亚洲最稳定资源在线观看 | 日韩专区在线播放 | 久草手机在线视频 | 亚洲色综合狠狠综合区 | 亚洲精品入口一区二区乱麻豆精品 | 国精产品一二三区传媒公司 | 国产午夜理论片YY8840Y | 一区二区三区免费观看 | 国产男人的天堂在线视频 | 日韩 在线视频精品 | 中文字幕无码人妻AAA片 | 九九热视频免费在线观看 | 亚洲第一成网站 | 国产午夜毛片 | 黄色搞逼 | 黄页视频在线免费观看 | 伦理片秋霞网伦理片 | 伊人成综合人网 | 麻豆网站 | 色综合久久综合中文小说 | 欧美极品videosex性欧美 | 伊人成综合人网 | 狠狠干网站 | 丰满农村熟女大码 | 欧美一性一交一伦一A片视频 | 天天射天天干天天色 | 亚洲成人福利在线 | 亚洲四色 | 扒开双腿被两个男人玩弄 | 一区二区三区免费看A片 | 天天在线干 | 一区二区三区在线免费视频 | 美女扒开腿让男生桶爽免费APP | 97久久精品国产成人影院 | 亚洲一区 中文字幕 久久 | 日韩国产人妻一区二区三区 | 男男开荤粗肉NP快穿 | 伦理片网站 | 性荡视频播放器在线视频播放 | 国产98在线 | 国产一级理论免费版 | 欧美大成色www永久网站婷 | 精品福利app导航 | 日韩欧美视频一区二区在线观看 | 国色天香精品一卡二卡三卡四卡 | 99爱视频在线 | 九九涩| 高h禁伦没羞没躁 | 国产精品扒开腿做爽爽爽视频 | 亚洲AV无码专区A片奶水牛牛 | 亚洲天堂免费看 | 午夜亚洲福利在线老司机 | 亚洲AV永久综合在线观看尤物 | 久久久网久久久久合久久久久 | 亚洲精品手机在线观看 | 黄页视频在线免费观看 | 国产欧美激情一区二区三区 | 欧美日韩另类在线观看视频 | 天美传媒影视 | 国产99小视频 | 国产在线观看首页123 | 暗卫CAO烂王爷屁股眼H | 国产成人精品久久久久婷婷 | 国产又爽又黄又不遮挡视频 | 成 人 网 站免费观看 | 求个网站你懂的无毒 | 久久五月色婷婷丁香六月综优物 | 狠狠色噜噜狠狠狠狠黑人 | 国产成人综合洲欧美在线 | 香港日本韩国三级网站 | 美国一级毛片免费 | 午夜精品久久久久久久99热 | 好好的日视频www | 2021久久99国产熟女人妻 | 毛片导航| 国产精品扒开腿做爽爽爽王者A片 | 麻豆AV久久无码精品九九 | 91精品一区二区三区在线观看 | 国产精品久久久久久久久免费hd | 做A爰片久久毛片A片的价格 | 无图 亚洲 欧美 偷拍 | 老女老肥熟国产在线视频 | 日本一区二区三区欧美在线观看 | 国产成人久久综合第一区 | 伊人大香线蕉精品在线播放 | 真人一级一级特黄高清毛片 | www在线小视频免费 XL上司带翻译不打马赛 | 久久综合伊人77777麻豆 | 黄色一级毛片 | 黑巨茎大战美女在线播放 | 色妞网 | 国产护士资源总站 | 人妻AV中文系列 | 波多野结衣视频一区二区 | 久久99热只有精品2019app | 国产激情对白一区二区三区四 | 老司国产高清免费视频 | 美女h动态图| 国产色无码精品视频国产 | 麻豆文化传媒网站入口 | 免费观看欧美成人1314w色 | 成人伦理 | 色综合网站国产麻豆 | 一级黄色欧美 | 伧理片午夜伧理片毛片日本 | 欧美 自拍 在线 综合图区 | 精品一区二区三区高清免费观看 | 久久久久综合网久久 | 99美国热| 人色网 | 欧美流行 在线播放 | 午夜影院试ty | 成人午夜精品无码区久久漫画日本 | 欧美一区二区三区免费看 | 日韩成人免费在线视频 | 亚洲一区二区三区夜色 | 亚洲激情成人网 | 久久精品一卡二卡三卡四卡视频版 | 欧美日韩中文字幕在线手机版本 | 乱子伦小说500短篇 伦 乱真实故事 | 国模左儿| 久久精品久久久久 | 毛片中文字幕 | 久久国产免费观看精品A片 久久国产免费观看精品1 | 欧美xxxxx在线观看 | 强被迫伦姧惨叫小说 | 日韩成人免费在线 | 欧美又大又黄又粗又长A片 欧美又大又色又爽AAAA片 | 年轻的馊子8HD中文字幕 | 亚洲射图 | 亚洲伊人色综合网色欲WWW | 青青草成人费观看 | 欧美在线网址 | 黄瓜污影院 | 成人亚洲国产精品久久 | 国产欧美一区二区三区久久 | 国产成人精品一区二区免费 | 在线观看免费黄色小视频 | 中文字幕色 | 亚洲精品天堂在线观看 | 国产成人午夜极速观看 | 欧美日韩免费播放一区二区 | 在线网站:yw193.com | 97狠狠干| 黑巨茎大战美女在线播放 | 日本午夜网站 | 欧美黑人乱大交 | 古代级a毛片免费观看 | 小说高黄全肉 | 国产麻豆精品乱码一区 | 欧美日日干 | 91三级在线| 都市人妻古典武侠另类校园 | 日本无码人妻精品一区二区蜜桃 | 精品高清1卡2卡3卡4麻豆 | 久久草色播 | 一级毛片一片毛 | 精品久久久久不卡无毒 | 99国产精品久久久久久久久久久 | 午夜亚洲福利在线老司机 | 九九久久香港经典三级精品 | 亚洲伊人情人综合网站 | 欧美韩国日本 | 麻豆久久久9性大片 | 久久视频在线视频精品 | 久操免费在线 | 国产伦精品一区二区三区在线观看 | 国产又大又硬又粗 | 精品国产精品人妻久久无码五月天 | 久久亚洲精品AV无码四区 | 欧美一卡2卡3卡四卡海外精品 | 日韩在线视频观看在线看 |