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

avgxivy

13 Oct 2025(atualizado 13/10/2025 às 00h56)

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

Temas

Compartilhe

The Town 2025: confira line-up completo de domingo, com Green Day, Iggy Pop e Bad Religion'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 jogos online ao vivo hojeits 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

_Kryvyi_Rih_Analysing_Russian_strike_on_Ukraine_hotel.txt

Dyson e Samsung: g1 testa dois modelos de aspirador de pó vertical lazer e os lazer foco.

GRáFICOS

nos eixos

'The most ingenious stunt since the Trojan Horse' The Soviet artwork that spied on the US.txt

Móveis planejados integram as plantas dos apartamentos explorar e os moda lazer.

Navegue por temas

Como se proteger do mosquito da dengue e de outros insetos: veja lista com 10 repelentes Iggy Pop faz justi?a ao título de 'padrinho do punk' em show elétrico no The Town The Town: ladeada dos filhos, Lauryn Hill faz baile irresistível do R&B ao reggae Piores ideias para fazer na airfryer: usar carv?o, esquentar sopa e cozinhar latas Mosquito da dengue e outros insetos: 10 repelentes para se proteger Entre tigres, zebras e o vídeo do bebê: a viagem de Viih Tube à áfrica do Sul Liquidificadores individuais: g1 testa 3 modelos para fazer shake Lavar ou n?o lavar o jeans? Saiba o que pode comprometer a durabilidade da pe?a Com que frequência você deve lavar o suti?? Especialistas respondem Após show no The Town, Lauryn Hill posou para fotos e conversou com f?s na grade do palco The One: ‘cumprimentou um a um’
六月婷婷综合激情 | 日韩欧美国产中文字幕 | 国产精品大陆在线视频 | 精品国产高清毛片A片看 | 国产一区二区高清 | 99视频在线精品免费 | 国产精品久久人妻无码网站一区无 | 免费欧洲毛片a级视频 | 日韩电影免费在线观看中文字幕 | 熟妇的荡欲色综合亚洲图片 | 99视频国产精品免费观看app | 欧美性A片又大又长 | 在线 国产 有码 亚洲 欧美 | 国产日韩视频一区 | 涩情图片网 | 自拍 亚洲 欧美 卡通 另类 | 美女扒开下面让男生桶白浆 | 男女久久久国产一区二区三区 | 无码中文字幕热热久久 | 一区二区三区日韩免费播放 | 特级黄国产片一级视频播放 | 丝瓜app下载网址进入安卓免费 | 麻豆文化传媒官方网站入口免费 | 全球热恋迅雷 | 樱花草WWW视频在线观看视频 | 泷泽萝拉 快播 | 丁香花在线影院观看在线播放 | 无码免费一区二区三区免费播放 | 国产午夜AV亚洲欧美小说 | 小浪货你夹得我真紧 | 国产精品岛国久久久久 | 免费观看黄色一级片 | 越南护士毛茸茸性 | 狠狠色噜噜综合社区 | 色12| 打光屁屁vk丨视频 | 波多野结衣办公室33分jian情 | 激情影院内射美女 | 亚洲免费三区 | 中文字幕在线免费观看视频 | 日韩国产精品人妻无码久久久 | 国产精品99久久免费观看 | 久久久久久久久亚洲 | 国产成人福利免费观看 | 国产亚洲精品VA片在线播放 | 91福利视频免费观看 | 欧美日韩精品一区二区在线播放 | 99re6免费视频 | 日日摸夜夜添夜夜添亚洲女人 | 国语高清精品一区二区三区 | 国产男女猛烈无遮挡A片游戏 | 日本高清免费毛片大全 | 一区毛片 | 天天操操操操操操 | 青草免费在线 | 国内露脸少妇精品视频 | 欧美性A片人喾交 | 巜隔壁放荡人妻bd高清 | 国产乱码精品一品二品 | 好大好硬好深好爽老师受不了 | 五月天亚洲| 免费无码A片一区二三区 | 国产精品人妻99一区二 | 国产美女无遮挡裸体毛片A片 | 日本公妇里乱片A片在线播放保姆 | 国产精品久久久久久吹潮 | 欧美成人精品一区二区免费 | 精品欧美一区二区三区久久久 | 日韩视频在线播放 | 97人人澡人人爽人人模 | 亚洲激情网站 | 好紧好湿太硬了我太爽了文字 | 国产精品自在在线午夜区app | 国产伦精品一区二区三区精品 | 91在线看视频 | 国产精品一区二区人妻无码 | 麻豆精品一卡2卡三卡4卡免费观看 | 精品久久伦理中文字幕 | 国产精品无码视频一区二区 | 日本三级香港三级人妇 下载 | 老师洗澡让我吃她胸的视频 | 国产精品人妻一区二区三区无码 | 91久久线看在观草草青青 | 欧美精品一区二区三区在线播放 | 久久久噜噜噜久久 | 国产熟妇久久精品亚洲熟女图片 | 欧美顶级少妇做爰HD | 国产片AV片永久免费观看 | 久久精品免费电影 | 精品无人区麻豆乱码1区2区 | 日本成人福利 | 日韩午夜在线视频 | 男人的天堂av2024在线 | 国产精品黄在线观看免费软件 | 欧美色在线精品视频 | 在线综合 亚洲 欧美 日韩 | 99re在线视频播放 | 99国产精品久久久久久久久久久 | 亚洲久久无码在线视频 | 国产人妻一区二区免费AV | 欧美综合精品 | 99久久久无码国产精品免费人妻 | 国产高清免费不卡观看 | 欧美69xxxx | AV国产乱码一区二区三视频 | 中文字幕日本无码少妇 | 国产亚洲精品久久无码98 | 国产一区视频在线 | 人妻少妇久久久久久97人妻 | 欧美丰满熟妇BBB久久久 | 1234av| 色欲AV亚洲AV无码精品 | 最好看的最新的中文字幕1 最好看的最新的中文字幕3 | 三个馊子伦着玩小说冫 | www.五月天| 亚洲综合日韩中文字幕v在线 | 亚州笫一色惰网站 | 久久九九精品视频 | 浴室人妻的情欲HD三级国产 | 日本一区二区三区免费视频 | XXX.日本学生妹.COM | 污网站在线观看 | 日本a∨在线播放高清 | 八匹狼影院| 激情五月深爱五月 | 成人深夜视频在线观看 | 2022国产精品网站在线播放 | 亚洲熟妇色自偷自拍另类 | 在线看免费毛片 | 国产成人精品福利网站在线观看 | 国产69精品久久久久人妻 | 松岛风 百度影音 | 色播基地 | 蜜桃视频一区二区 | 精品三级66在线播放 | 99久久国产免费 - 99久久国产免费 | 五月丁香合缴情在线看 | 嫩草国产露脸精品国产软件 | 精品麻豆国产 | 国产三级做爰在线播放 | 亚洲AV国产精品无码市川京子 | 一区二区三区视频 | 中文字幕高清免费不卡视频 | uzumakikushina玖辛奈本子 | 公交车上荫蒂添的好舒服的电影 | 波多野结衣中文字幕视频 | 少妇伦子伦情品无吗 | 亚洲女bbwxxxx另类 | 成人欧美一区二区三区A片 成人色网 | 欧洲无人区卡一卡二卡三 | 欧美一级视频在线观看 | 狠狠色噜噜狠狠狠狠98 | 快快用力深点好疼别舔 | 国产成人精品免费视频网页大全 | 日本在线亚洲 | 羞羞影院午夜男女爽爽影院网站 | 久久无码潮喷A片无码高潮动漫 | 精品麻豆一区二区三区乱码 | 精品久久综合1区2区3区激情 | 色欲天天天综合网 | 久久AV亚洲精品一区无码 | 天天爽天天干天天操 | 黄页网站在线观看视频 | 男女野外做爰全过程69影院 | 日韩视频专区 | 女主床戏被进高H | 黄色片中国 | 波多野结衣免费一区二区三区香蕉 | 欧美一区综合 | 中文字幕中文字幕在线 | 国产一二三四区在线观看 | www.xxxx.日本| 国产精品A成V人在线播放 | 国内精品亚洲 | 成人久久欧美日韩一区二区三区 | 国产精品人妻无码77777 | 亚洲午夜无码久久久久蜜臀av | 玫瑰之战免费观看全集在线 | 成人www视频| 成人在线观看不卡 | 中文字幕 制服 亚洲 另类 | 成人18免费网站 | 中文字幕最新 | 日韩成人免费视频播放 | 网红思瑞一区二区三区 | 玩高中女同桌肉色短丝袜脚文 | 国内精品A片XXX久久久 | 簧片高清在线观看 | 天天干天天天天 | 88av网站| 美女图片脱空一点不露 | 丁香综合在线 | 国产精品99久久久 | 亚洲欧洲视频一区 | 美尻在线 | www.日本在线视频 | 黄色一级片免费观看 | 女人毛多水多高潮A片 | 国产老熟女伦老熟妇视频 | 国产精品久久久久久影视 | 老师的兔子好软水好多无弹窗 | 比比资源先锋影音网 | 国产黄色在线观看 | 亚洲这里只有精品 | 国产精品V无码A片在线看 | 日韩视频 中文字幕 视频一区 | 五月网址 | www.午夜| 玖草在线中文在线2024 | 激情电影色影音先锋 | 麻豆高清免费国产一区 | 99国产亚洲精品久久久久久 | 亚洲午夜无码久久久久蜜臀av | 狠狠爱亚洲五月婷婷av | 国产精品1区在线播放 | 好男人资源影院 | 亚洲性久久久影院 | 性福天堂网站 | 日韩在线av免费视久久 | 好好的日视频www | 天天干天天射天天 | 亚州AV无码乱码色情 | 国产日产欧产精品精品推荐在线 | 无节操摄影部第一集第二集 | 国产精品毛片在线大全 | 波多野结衣办公室在线观看 | 日xxxx| 国产特黄又粗又硬A片 | 免费看男人J放进女人J无遮掩 | 亚洲性无码A片在线观看尖叫 | 国产电影在免费播放在线观看 | 久久综合给合久久97色美利坚 | 性瘾荡乳H古代 | 口内射精颜射极品合集 | 看中国毛片| 久久无码人妻中文国产AV | 亚洲欧美偷拍综合图区 | 亚洲天天在线日亚洲洲精 | 999国产高清在线精品 | 烽火三月 | 欧美乱偷在线 | 成人做爰高潮A片免费视频 成人做爰片免费网站 | 色哟哟视频在线观看免费播放 | 国产一区二区在线免费观看 | 黄色字幕网 | 受被三个攻各种道具PLAY | 天天做.天天爱.天天综合网 | 中日韩一卡二卡三卡四卡在线观看 | 国产成人综合网在线观看 | 亚洲欧美无人区乱码 | 美女网站免费福利视频 | 制服 丝袜 亚洲 中文 综合 | 九一果冻传媒制片入口 | 黄色免费在线观看网址 | 亚洲色无码A片一区二区红樱 | 学生妹被爆插到高潮无遮挡 | 午夜伊人| 波多野结衣在线观看网址 | 在线视频一区二区三区四区 | 久久99九九国产免费看小说 | 翁公与小莹在客厅激情 | 最好看的免费观看高清电影 | 97国产精品人妻无码免费 | 四虎一区二区成人免费影院网址 | jjzz日本老师| 日韩一区二区三区精品 | 狠狠人妻久久久久久综合九色 | 乱码丰满人妻一二三区 | 一级毛片免费在线 | 古装一级淫片a免费播放口 古装一级无遮当一级毛片 古装一级毛片手机免费看 古装一级毛片免费观看 | 婷婷丁香五月啪啪综合 | 漂亮少妇高潮A片XXXX | 日本免费的一级v一片 | 欧美一级在线免费观看 | 久久99精品久久久久久久野外 | 午夜免费看视频 | 99视频在线看观免费 | 日日摸夜夜添夜夜添亚洲女人 | 国内精品A片XXX久久久 | 久久久久久一级毛片免费无遮挡 | 拔插拔插视频在线观看 | 亚洲日本三级 | 亚洲午夜久久久精品影院视色 | 中文字幕一区二区三 | 国产成人精品免费视频动漫 | 国精产品W灬源码A片伊在线 | 永久在线免费 | 久久99精品免费视频 | 国产精品福利短视在线播放频 | 九九国产| 特级欧美真人做爰大片 | 国产日韩综合 | 天天操天天干天搞天天射 | 香蕉伊人不卡在线看 | 原神美女被超污app 越南护士毛茸茸性 | 欧美一卡二卡3卡4卡无卡免费 | 午夜DJ影院在线观看免费完整高清 | 薄冰电视剧全集40集免费观看 | 丁香成人影院 | 亚洲一级黄色片 | 国产一区二区三区免费大片天美 | 免费狼人久久香蕉网 | 韩国羞羞秘密教学子开车漫书 | 无限看片的免费视频动漫 | 欧美又黄又大又爽A片 | 成人精品一区二区三区校园激情 | 日日lu| 色姑娘久久综合网天天 | 公和我做爽死我了A片N | 国产第一草草影院 | 国产区91 | 青青草大香焦在线综合视频 | 日本真人做爰高潮全过程 | 久久不卡影院 | 下身被黑人猛然进入 | 国产在线播放一区二区 | 噜噜噜噜天天狠狠 | 插到嗷嗷嗷叫群交 | 蜜色欲多人AV久久无码 | 五月婷香 | av伦理天堂 | 日韩精品专区在线影院重磅 | 人妻换人妻互换A片爽电影 人妻精品国产一区二区 | 2020天堂在线亚洲精品专区 | 视频一区二区欧美日韩在线 | 国产一级一片免费播放刺激 | 国产成人综合五月久久网址 | 国产人碰人摸人爱免费视频 | 精品国产手机视频在在线 | 蜜桃少妇AV久久久久久高 | 国产亚洲精品VA片在线播放 | 精品玖玖玖视频在线观看 | 国产精品日本无码久久一老A | 一本大道熟女人妻中文字幕在线 | 欧美亚洲国产日韩一区二区三区 | 91在线中文字幕 | 国产精品久久久久久无码人妻 | 亚洲巨乳巨臀在线一区二区BBW | 日韩欧美一区二区无码免费 | 曰韩无码AV久久久免费 | 久99久精品视频免费观看v | 国产精品夜夜春夜夜 | 最近中文字幕视频完整版在线看 | 国产精品日本一区二区在线播放 | 免费在线观看h片 | 九一精品国产 | 国产ZLJZLJZLJZLJ18公司 | 欧美特级限制片高清 | 深爱综合网 | 九九视频精品36线视频在线观看 | 一级片麻豆 | 看片地址| 国内一级片 | 周海媚主演的电视剧 | 亚洲精品久久久久一区二区三区 | 成年人免费黄色 | 欧美视频在线观 | 国产初高中生露脸在线播放 | 97人人添人人澡人人澡人人澡 | 色涩网站在线观看 | 夜精品一区二区无码A片 | 四虎 影院 免费 | 公粗挺进了我的密道在线播放贝壳 | 456亚洲影院 | 国产成人久久综合第一区 | 色www永久免费 | 撑 趴 润滑 痛苦 求饶 BL | 日本不卡在线视频高清免费 | 果冻传媒九一制片厂 | 亚洲一区二区师生制服 | 国产成人综合精品 | 久久综合狠狠综合久久97色 | 亚洲A片无码一区二区蜜桃 亚洲A片无码一区二区蜜桃久久 | 久久狠狠第一麻豆婷婷天天 | 亚洲狠狠婷婷综合久久久久网站 | 美幼论坛 | 国产日产亚洲欧美综合另类 | 武侠艳妇屈辱的张开双腿 | 国产亚洲精品视频在线网 | 免费日本视频 | 麻豆精品一卡二卡三卡 | 天天操天天做 | 日韩久久一区二区三区 | 欧美人妻一区黄A片 | 色五月最新网址 | 欧洲男女下面进出的视频 | 欧美老熟妇又粗又大 | 国产大片内射1区2区 | 韩国伦理电影在线看线 | 色爱激情网 | 成人在线免费网站 | 在线观看永久免费视频直播 | 影音先锋资源av男人站 | 久久影院一区二区三区 | 亚洲色综合狠狠综合区 | 亚洲国产精品色情20242024 | WWW夜插内射视频网站 | 乱爱妇乱子伦精品 | 吃奶边摸叫床刺激A片视频 抽插内射高潮呻吟爆乳 | 欧洲无人区卡一卡二卡三 | 色噜噜狠狠狠色综合久 | 一个人看的在线www高清视频 | 夜色网| 精品日韩一区 | 久久国内精品自在自线 | 91精品孕妇系列 | 91影视永久福利免费观看 | 忘忧草日本社区在线播放 | 口工绅士里番中文全彩 | 无码中文字幕无码一区日本 | 国产人妻丰满熟妇嗷嗷叫 | 日日噜噜爽爽狠狠视频 | 欧美日韩a级片 | 深夜成人福利视频 | 国产在线视频一区二区不卡 | 国产精品剧情 | 伊人综合在线 影院 | 国产女人毛多水多A片视频 国产欧美精品一区二区三区-老狼 | 九一传媒果冻制片厂 | 国产精品一区二区亚瑟不卡 | 成人一区视频 | 黄色片免费播放 | 好男人社区神马在线观看WWW | 午夜A片无码福利1000集 | 久久国产免费观看精品1 | 国产高清亚洲日韩字幕一区 | 人人看电影 | 无码一区二区三区曰本A片 无码一区国产欧美在线资源 | 欧美老头把我添高潮了A片视频 | 亚瑟视频在线观看 | 首页欧美日韩在线观看 | 狠狠狠色丁香婷婷综合久久五月 | 精品久久久久久蜜臂a∨ | 99精品国产在热久久 | 国产熟妇精品一区二区 | 99re热这里有精品首页视频 | 成都影院免费高清完整版 | 最新国产在线观看福利 | 国产日日夜夜 | 色婷婷精品大全在线视频 | 日本在线高清视频 | 51无码人妻精品1国产 | 超级H荡的辣文小说 | 大陆一级毛片免费高清 | 69精品国产久热在线观看 | 国产情侣91 | 一区二区三区精品牛牛 | 中文精品99久久国产 | 美味三姐妹在线观看 | 91免费福利 | 欧美老妇毛茸茸二毛 | 久久人妻无码毛片A片麻豆 久久人人玩人妻潮喷内射人人 | 影院色情免费 | 欧美日韩精品一区二区三区四区 | 国产成人精品综合网站 | 欧美劲爆婷婷五月久久 | 成人酒色网 | 亚洲精品一区久久久久一品AV | 欧美videos人牛交 | 在线观看亚洲欧美视频免费 | 日本韩无码电影 | 九九99re热线精品视频 | 国产无遮挡成人免费视频网站 | 午夜大片免费完整在线看 | 欧美牲| 2020天堂在线亚洲精品专区 | 欧美又大又粗又湿A片 | 99re在线精品视频免费 | 精品水蜜桃久久久久久久 | 欧美日本道免费一区二区三区 | jizz免费| 国产大片资源中文字幕 | 免费网站在线观看人数在哪网站 | 亚洲伦理久久 | 国产午夜AV亚洲欧美小说 | 色情A片成人网站免费看 | 精品国产久线观看视频 | 精品无人区乱码一区二区三区手机 | 日本一道在线播放高清 | 风流艳帝 | 超91精品手机国产在线 | 天美MD豆传媒一二三区进 | 好爽好紧好大的免费视频国产 | 亚洲网址在线 | 四房开心色播网 | 四虎影在线永久免费四虎地址8848aa | 亚洲四色 | 国产精品小说 | 无码强伦姧A片在线观看 | 久久久久久久久久久大尺度免费视频 | 久久精品久久精品国产大片 | 亚洲欧美一区二区久久 | 成年在线人免费视频视频 | 亚洲精品中文字幕乱码三区 | 午夜福利试看120秒体验区 | 午夜片神马影院福利 | 日本 欧美 在线 高清 | 看全免费的一级毛片 | 国产二级一片内射视频播放 | 成年香蕉大黄美女美女 | 深夜国产成人福利在线观看女同 | 黄页网站免费看 | 校草上课时狂揉我下面 | 国产在线精品视频二区 | 国产成人久久婷婷精品流白浆 | 国产二级一片内射视频播放 | 精品久久久久久中文字幕欧美 | 黄色软件草莓丝瓜秋葵安卓下载破解版大全 | 色综合成人网 | 免费老外的毛片清高 | 欧美99热| 超碰伊人久久大香线蕉综合 | 麻豆文化传媒精品 | 一区一区三区产品乱码 | 欧美精品video | 亚洲欧美一区二区三区四区 | 色www.亚洲免费视频 | 婷婷成人亚洲 | 国产欧美一区二区日本加勒比 | 污污内射久久一区二区欧美日韩 | 人妻天天爽夜夜爽三区麻豆A片 | 亚洲国产高清视频 | 国产国产人免费人成成免视频 | 在线毛片观看 | 鲁一鲁综合 | 色综合小说天天综合网 | 亚洲激情区 | 国产传媒18精品A片在线观看 | 丁香狠狠色婷婷久久综合 | 波多野结衣免费线在线 | аⅴ天堂中文在线网 | 欧美无修正 | 国产剧情精品在线 | 天天做夜夜做久久做狠狠 | 欧美一线高本道高清免费 | 亚洲成在人线中文字幕 | 后入到高潮免费观看 | 亚洲免费网站观看视频 | 精品国产久线观看视频 | 日本夜夜操| 久久免费视频7 | 日日猛噜噜狠狠扒开双腿小说 | 国产精品av免费观看 | 91精品国产91 | 啪啪啪视频高清 | 午夜免费观看 | 国产麻豆AV一区二区三区 | 亚洲一区免费视频 | 无码精品人妻一区二区三区颖A片 | 国产好大好爽久久久久久久 | 波多野结衣中文一区 | 成年男人午夜片免费观看 | 精品国产国偷自产在线观看 | 久久综合气久久狠狠狠97色 | 8x成人永久在线观看视频 | 熟女少妇人妻中文字幕 | 琪琪热码在线中文字幕 | 最新国产成人盗摄精品视频 | 久久精品无遮挡一级毛片 | 四虎免费在线视频 | 日日碰狠狠躁久久躁AV | 日本樱花视频高清观看 | 美国一级毛片完整高清 | 国产香蕉视频在线观看 | 亚洲资源在线播放 | 亚洲国产天堂久久九九九 | 午夜影院一区二区三区 | 在线高清无码欧美久章草 | 手机上免费看twitch的加速器 | 成人AV免费网址在线观看 | 日本人xxxxx视频在线 | 国产精品呻吟久久人妻无吗 | 亚洲播播 | 欧美video巨大粗暴乌克兰 | 亚洲乱码AV久久久久久久 | 东京热 影音 | 国色精品卡一卡2卡3卡4卡免费 | 国产资源视频 | 亚洲国产区男人本色在线观看 | 日本少妇裸体做爰高潮片 | 五月天婷婷激情网 | 亚洲精品久久久久久中文 | 妓出阁| 国产国语一级毛片 | 欧美FREE性护士VIDE0SHD | 无码人妻丰满熟妇A片护士电影 | 少妇AV射精精品蜜桃专区 | huluwa官网在线入口testflight | 日本乱妇乱熟乱妇乱色A片 日本久久精品视频 | 日本一本一道波多野结衣 | 2020年精品国产午夜福利在线 | 美女把小内内脱个精光的照片 | 亚洲第一欧美 | 日日摸天天爽天天爽视频 | 中文字幕简介 | 免费观看日本视频 | 撸撸撸中文网 | 国产拍揄自揄免费观看 | 国产精品第一国产精品 | 天天操夜夜添 | 色婷婷激婷婷深爱五月小说 | 国产国语 毛片高清视频 | 久久只有这里有精品4 | 日本高清免费一本在线观看 | 日本高清免费aaaaa大片视频 | 永久免费视频 | 欧美 亚洲 在线播放 | 国产ts在线视频 | 亚洲色无色A片一区二区农夫山泉 | 麻豆文化传媒一区二区 | 久久精品国产一区 | 影音男人新资源网 | 曰批全过程免费视频在线观看草莓 | 午夜男女爽爽羞羞影院在线观看 | 精品蜜臀AV在线天堂 | 日本免费一区二区在线观看 | 久久久无码精品无码国产人妻丝瓜 | 人人爽天天碰狠狠添 | 日本妇人成熟A片一区-老狼 | 嫩B人妻精品一区二区三区 嫩草AV久久伊人妇女 | 国产AV国片精品一区二区 | 麻花传媒沈芯语老师视频 | 偷亚洲偷国产欧美高清 | 亚洲精品国产AV成人毛片 | 毛片TV网站无套内射TV网站 | 日本10000部拍拍拍免费视频 | 欧美日韩精品一区二区三区视频在线 | 老司机综合网 | 欧美成人AAA毛片 | 日本亚欧热亚洲乱色视频 | 伦理片午夜在线视频 | 苍井空无码换线观看 | 欧美黑人猛性暴交 | 狠狠色丁香婷综合久久 | 99亚洲精品卡2卡三卡4卡2卡 | 国内精品人妻无码久久久影院蜜桃 | 西西人体做爰大胆视频韩国 | 精品伊人网 | 精品国产污污免费网站入口 | 欧美无人区码卡二卡3卡4乱码 | 欧美顶级少妇做爰HD | 成人AV免费网址在线观看 | 亚洲在线中文字幕2 | 国产精品自产拍在线观看中文 | 美国三级网站 | 青青草在免费线观曰本 | 欧美亚洲桃花综合 | 亚洲一区二区无码影院 | 69精品在线观看 | 手机在线精品视频 | 色姑娘综合网 | 国产精品成人影院在线观看 | 麻花传媒网站永久入口视频 | 有匪全集免费观看完整版 | 久久视频在线视频 | 午夜福利麻豆国产精品 | 在线看黄色的网站 | 性做爰添LBB在线视频 | 久久99热这里只频精品6 | 福利精品一区 | 国产熟妇无码一区二 | 欧洲最新一卡二卡三卡四卡 | 啪啪亚洲| 日本亚欧色情 | 亚洲免费区 | 国产无卡一级毛片aaa | 久99视频| 国产乱码精品一区二区三区久久 | 日本日本熟妇中文在线视频 | 久久99精品一久久久久久 | 国产精品人人妻人色五月 | 东京道一本热中文字幕 | 伦理电影在线 | 久久久久99这里有精品10 | 中文字幕婷婷 | 亚洲精品蜜桃久久久久久 | 欧美国产中文在线字幕视频 | 欧美日本性 | 国产成人免费福利网站 | 国产人妻精品一区二区三区不卡 | 亚洲 欧美 校园 春色 小说 | 99久久精品免费看国产 | 国产乱子夫妻XX黑人XYX真爽 | 韩国三级日本三级在线观看 | 日本成人二区 | 永久免费观看黄网站 | 2024琪琪午夜理论电影网 | 国产免费A片在线观看人 | 乱小说欧美综合 | 日本三级在线观看511 | 国产香蕉97碰碰久久人人 | 狠狠的日 | 国产一性一交一伦一A片视频 | 日韩欧美伦理 | 国产后式a一视频 | 色琪琪av男人的天堂 | 全免费a级毛片免费看不卡 全免费a级毛片免费看 | 精品国产福利在线视频 | 美女扒开腿让男人桶爽30分钟 | 久久国产视频网 | 在线免费观看黄页 | 日本亚洲综合 | 久久久91精品国产一区二区三区 | 无遮挡18禁羞羞视频免费动漫 | 色偷偷亚洲女人天堂观看欧 | 最新中文字幕在线资源 | 国产AV午夜精品一区二区入口 | 国产亚洲精品久久7788 | 精品国产免费久久久久久 | 小小拗女一区二区三区 | 国产精品变态重口在线 | 女班长臭玉足踩踏榨精 | 国产又爽又大又黄A片软件 国产又爽又大又黄A片图片 | 久久免费播放 | 日本 一二三 不卡 免费 | 日韩午夜 | 乱码午夜-极品国产内射 | 樱花草免费视频在线观看WWW | 一二三四免费中文字幕 | 国产亚洲精品成人久久网站 | 成人午夜精品无码区久久漫画日本 | 欧美大片免费观看 | 97碰在线看片免费视频 | 日日麻批免费视频播放40分钟 | 影视先锋男人无码在线 | 国产人成精品综合欧美成人 | 将军野外玩弄公主H文 | 色天使色护士在线视频 | 韩国免费特一级毛片 | 无套内射在线无码播放 | 亚洲薄码区 | 97免费人妻在线观看 | 国产亚洲精品久久精品录音 | 免费视频91| 亚洲AV国产爽歪歪无码 | 蜜桃99.com| 亚洲精品国产精品乱码不卞 | 黄色软件草莓丝瓜秋葵安卓下载破解版大全 | A片人人澡C片人人大片 | 高辣H文黄暴糙汉文H | 45分钟级毛片免费视频 | 免费无码又黄又爽又刺激 | 国产精品人妻一区二区99 | 色YEYE在线视频观看网站 | 7M精品福利视频导航 | 国产真实强被迫伦姧女在线观看 | 97精品一区二区视频在线观看 | 偷窥国产亚洲免费视频 | 色黄网站大全 | 国产熟女系列丰满熟妇 | 亚洲精品久久久久中文第一幕 | 麻豆国产精品久久人妻 | 国产精品大尺度尺度视频 | 国产人妻精品一区二区三区不卡 | 免费的青榴视频在线观看 | 草 榴 2020最新地址T66Y | 韩国在线无码中文字幕 | 中文字幕国产在线观看 | xvideos永久免费入口 | 免费一级欧美大片在线观看 | 天上人间影院久久国产 | 久久精品这里是免费国产 | 精品人妻一区二区A片 | 999久久久成人A片精品免费看 | 婷婷精品国产亚洲AV在线观看 | 在线视频久久只有精品 | 黄网免费观看 | 欧洲精品不卡1卡2卡三卡四卡 | 久久精品国产清自在天天线 | 亚洲乱码一卡二卡四卡乱码新区 | 337P粉嫩大胆色噜噜嚕 | 欧美特级限制片高清 | 国产成人禁片免费观看 | 免费黄网站在线看 | 国产做A爰片毛片A片美国 | jizz日本老师jizz在线播放 | 国产精品久久人妻互换 | 国产一三区A片在线播放 | 办公室挺进美妇李婷 | 黄色小网站在线观看 | 亚洲精品久久无码AV片动漫网站 | 玩高中女同桌肉色短丝袜脚文 | 囯产精品宾馆在线精品酒店 | 天天干天天玩 | 色综合久久98天天综合 | 免费看少妇高潮A片黄 | 日日噜噜夜夜爽爽 | 国产男女猛烈无遮挡A片软件 | 国产精品久久久久人妻无码 | 国产网址在线观看 | 欧美成人精品第一区 | 黄色国产免费观看 | 黄页视频免费看 | 色宅男午夜电影网站 | 日本一本久 | 久久综合草 | 感觉里面痒快舔想做 | 少妇做爰特黄A片免费看9588 | 秋霞影音先锋一区二区 |