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

mdzvno

12 Oct 2025(atualizado 12/10/2025 às 04h46)

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

Temas

Compartilhe

How_to_know_yourself_grow_yourself_and_take_control.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 jogos do vasco brasileir?o 2019its 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

You_did_it_how_doctor_realised_mushroom_cook_Erin_Patterson_was_a_killer.txt

How_a_kettle_could_help_keep_older_people_safe.txt lazer e os foco ponto quente.

GRáFICOS

nos eixos

Yorkshire reservoir levels fall below one third despite rainfall.txt

How_beetroot_can_enhance_your_performance.txt foco e os explorar moda.

Navegue por temas

How_does_extreme_weather_affect_our_brains.txt How_safe_is_frozen_fruit.txt How_the_mournful_songs_of_icebergs_reverberate_around_the_world.txt How_the_TikTok_ban_affected_US_influencers.txt How_to_make_pizza_like_a_Neapolitan_master.txt How_music_affects_our_mental_health.txt How_new_fitness_technology_can_improve_life_expectancy.txt How_technology_can_monitor_and_improve_our_health.txt How_the_bullet_train_transformed_Japan.txt How_technology_can_monitor_and_improve_our_health.txt
国产综合色在线视频播放线视 | 国产毛片女人高潮叫声 | 99精品与95优品 | 天天射狠狠干 | 蝴蝶谷成人论坛 | 国产在线综合视频 | 成年视频xxxxx在线网站 | 亚洲国产日韩视频观看 | 日本最新免费网站 | 亚洲欧洲国产成人综合一本 | 艳妇荡岳丰满交换做爰 | 中文天堂最新版www官网 | 色播日韩 | 欧美亚洲综合高清在线 | 娇妻被交换粗又大又硬视频 | 蜜桃在线线免费观看视频 | 蜜臀亚洲AV永久无码精品老司机 | 96免费精品视频在线 | 亚洲午夜精品A片一区三区无码 | 午夜成人影视神马 | 欧美精品无码一二三区网站 | 国产美女人人人妻 | 99国产在线 | 97色伦97色伦国产 | 欧美第一视频 | 日韩第二页| 国精产品一区二区三区有限公司 | 悠悠社区 | 波多野结衣在线资源 | 日本免费www | 青草草在线 | 色情A片做爰片 | 亚洲AV无码久久流水呻蜜桃久色 | 99久久精品国内 | 国产精品免费久久久久影院 | 精品久久久久久无码不卡 | 2021亚洲天堂 | 亚洲精品女同中文字幕在线 | 亚洲AV久久无码精品蜜桃 | 小说区视频区 | 国产在线一区视频 | 午夜在线网站 | 少妇内射高潮福利炮 | 五月婷婷之综合缴情 | 老湿免费体验区 | 热久久国产欧美一区二区精品 | 国产精品国产三级国产无毒 | 亚洲天天综合网 | 亚洲国产精品日本无码小说 | 人妻仑乱A级毛片免费看 | 日本一在线中文字幕天堂 | 欧美色tu| 伊人大蕉综合网站亚洲最大 | 日本aⅴ网站 | 美女久久久久久久久久久 | 中日韩精品卡一卡二卡3卡 中日文字字幕乱码视频 | 成人高清网站 | 国产特黄特色a级在线视频 国产素人自拍 | 亚洲午夜免费视频 | 少妇被又大又粗又爽毛片久久黑人 | 爱沢かりん | 美女午夜福利4K视频在线观看 | 范冰冰一级做a爰片久久毛片 | 最近中文字幕免费完整 | 国产三级电影网 | 一级一片一_级一片一 | 91福利精品老师国产自产在线 | 久久99精品久久只有精品 | 国产欧美va欧美va香蕉在线 | 国产hd高清freexxxx| 欧美视频在线观看欧美大片 | 亚洲欧美综合日韩字幕v在线 | 久久精品国产视频在热 | 黄色免费在线网址 | 荡公乱妇第1章方情全文免费 | 天天爱夜夜操 | 久久久噜噜噜久久 | 狠狠色丁香婷婷综合激情 | 善良的小峓子在线高清免费观看完整中文版 | 国产AV精国产传媒 | 日韩视频网 | 亚洲伊人久久综合影院2021 | 开心色播电影 | 激情内射日本一区二区三区 | 亚洲黄色三级视频 | 中文字幕一区在线观看 | 嫩草欧美曰韩国产大片 | 波多野结衣家庭教师诱惑 | 久久精品女人毛片国产 | 欧美成人一区二区三区在线视频 | tobu8 hd| 又黄又刺激好看的小说 | 蜜臀国产在线视频 | 美女把小内内脱个精光的照片 | 免费看男人J放进女人J无遮掩 | 国产情侣真实露脸在线 | 国产美女视频免费观看的网站 | 亚洲第一国产 | 国产免国产免费 | 被伴郎的内捧猛烈进出H | 国产美女主播一级成人毛片 | 出轨熟女人妻艳妇 | 尹志平吮小龙女乳 | 久9视频这里只有精品试看 久草app黄 | 中文字幕亚洲乱码熟女在线萌芽 | 一起探恋爱综艺在线观看第七期 | A片高潮抽搐揉捏奶头视频 A片高潮抽搐揉捏奶头视频在线看 | 免费护士一级毛片 | 欧美香蕉大胸在线视频观看 | 黄页网站在线视频免费 | 小草一二三四区乱码 | 国产日韩欧美一区二区 | 最新亚洲国产手机在线 | 国产毛片女人18水多 | 中文无码乱人伦中文视频播放 | 日韩精品一区二区三区在线观看 | 亚洲精品黄 | 91青青青青青爽在线 | 午夜黄视频 | 色五月激情小说 | 天堂中文资源网 | 自拍 亚洲 欧美 卡通 另类 | 国精产品网曝黑料在线观看 | a级黄色片网站 | 老司机午夜在线视频 | 一区二区三区福利 | 三级视频网站 | 亚洲丁香婷婷综合久久六月 | 伦理片在线线手机版韩国免费观看 | 99爱视频免费高清在线观看 | 国产精品恋恋影视 | 成人黄网18免费观看的网站 | 九九re | 天天爱天天操天天干 | 插插射啊爱视频日A级 | 王梅乱LUN第5部分 | 亚洲国产精品久久精品成人 | 欧美色图一区二区三区 | www.五月婷婷 | 国家一级毛片 | 性色AV性色生活片 | 色爽黄1000部免费软件下载 | 激情男女高潮射精AV免费 | 伊人久久综在合线亚洲不卡 | 中文三 级 黄 色 片 | 成熟妇人A片免费看网站 | 欧美bbxxx| 色综合天天综合 | 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 | 国产亚洲精品欧洲在线视频 | 人妻熟女制服师生中文字幕 | 91激情| 亚洲A片V一区二区三区有声 | 看黄子片wwwabc300 | 2024夜夜干天天天爽 | 青青自拍视频一区二区三区 | 久久影院午夜理论片无码 | 欧美变态杂交xxx | 极品美女一区二区三区视频 | 速看网韩国伦理片 | 欧美美女一区二区三区 | 香蕉在线综合2019版 | 四虎影永久地址在线 | 婷婷精品视频 | 免费观看久久 | 在线观看污网站 | 欧美阿v高清资源在钱 | 欧美一区二区三区红桃小说 | 91福利视频网站 | 日本巨大超乳在线播放 | 一本大道一卡二卡三卡四卡在线观 | 国产又爽又大又黄A片小说 国产又爽又黄无码无遮挡在线观看 | 91精品导航在线观看 | 丁香五月天的最新地址 | 波多野结衣手机视频一区 | 同涩限制分级第1页 | 国产在线无码不卡影视影院 | 欧美激情视频在线观看一区二区三区 | 亚洲AV无码久久精品色欲 | 一级人做人a爰免费视频 | 国产亚洲精品久久无码98 | 国内精品伊人久久久久 | javhdxxx| 精品人妻无码一区二区三区葡京 | 中国字幕免费观看 | 国自产拍偷拍福利精品啪啪 | 翁公与小莹在客厅激情 | 又黄又猛又爽大片免费 | 日本亚洲成人 | 欧洲内射XXX高清 | 久久久久久久久一次 | 黄片网址| 中文字幕欧美视频 | 又粗又硬女人免费视频 | 好大老师好爽快点深一点动漫 | 亚洲精品一区国产欧美 | 日本亚洲免费无线码 | 琪琪电影网午夜理论片717西瓜 | 国产AV无码专区亚洲AV久久 | 国产三级国产精品 | 真实露脸国产熟妇熟年妇人视频 | 五月天丁香久久 | 色性综合 | 在线观看黄页网站 | 天美影视传媒高清免费完整版 | 韩国伦理片手机在线观看 | 偷窥国产亚洲免费视频 | 从零开始的异世界生活第一季 | 国产www在线观看 | 永久AV狼友网站在线观看 | 床戏吻戏裸戏视频超长 | 天天天天做夜夜夜做 | 亚洲经典一曲二曲三曲 | 一日情 | 在线视频播放免费网站视频在线 | 亚洲日韩视频 | 三级毛片在线免费观看 | 国产精品久久久久久吹潮 | 96免费精品视频在线 | 久热精品视频在线观看99小说 | 精品一区二区三区在线成人 | 99蜜桃臀久久久欧美精品网站 | 97国产精品视频 | 国内免费自拍视频 | 同居试爱冷少夜夜纠缠 | 欧美一级日韩一级 | 国产内射在线激情一区 | 一级黄色片免费的 | 免费无码一区二区三区A片百度 | 中文字幕在线免费 | 欲女桃花| 三级韩国日本三级在线 | 欧美极品一区 | 黑人大战亚裔美女 | 久久精品成人免费看 | 婷婷久月 | 强壮公让我夜夜高潮A片视频 | 成人麻豆日韩在无码视频 | 中文字幕免费视频 | 2020国产成人免费视频 | 千涩成人网 | 自偷自拍三级全三级视频 | 我的公把我弄高潮了视频 | 天天干亚洲 | 国产精品人妻无码久久久2022 | 亚洲人成图片小说网站 | 免费黄色成年网站 | 免费观看黄色a一级视频播放 | 中文字幕一区二区三A片 | 真人性做爰无遮无挡动态图 | 国产欧美精品三区 | 欧美一性一交一伦一A片视频 | 韩国伦理片在线2018 | 最新国产在线播放 | 久久久999国产精品 久久久91精品国产一区二区三区 | 日日夜夜精品免费视频 | 好硬啊进去太深了A片 | 亏亏插曲叫疼的免费的视频 | 俺去也色五月 | 国产成人精品午夜二三区 | 最新午夜国内自拍视频 | 99视频在线免费观看 | 欧美流行 在线播放 | 欧美日韩在线精品一区二区三区 | 精品熟女少妇AV久久免费软件 | 欧美无人区码卡二卡3卡4乱码 | 日本中文字幕在线视频 | 少妇高清性色生活片成人版 | 五月天精品视频在线观看 | 亚洲婷婷六月 | 欧美精品 日韩 | 中文 日本 免费 高清 | 人妻AV久久一区波多野结衣 | 丰满熟妇被掹烈进入高清片 | 日本少妇裸体做爰高潮片 | 亚洲三级无码经典三级 | 91网在线| 乖宝真紧H嘶爽老子H | 精品欧美成人高清在线观看2021 | 91在线激情在线观看 | 伊人久久大香线蕉免费视频 | 国产麻豆一级在线观看 | C日本学生妹视频色呦呦 | 亚洲区中文字幕在线不卡电影 | 在线免费电影 | 免费黄a | 国产综合久久久久 | 国产精品人妻一区二区高 | 亚洲成人一区在线 | 五月天婷婷在在线视频 | 2024四虎永久在线影院 | 国产三级日本三级韩国三级在线观看 | 国产极品自拍 | 亚洲精品久久久久一区二区三 | 欧美性生交大片免费看A片 欧美性生交大片免费看A片免费 | 在线视频久 | 久久国内精品自在自线 | 日本黄 色 成 年 人免费观看 | 放荡勾人h的辣文 | 人人舔人人爱 | 无人区1在线观看 | 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 | 亚瑟首页YASEE40444 | 国产亚洲精品AV麻豆狂野 | 校园激情人妻古典武侠 | 97视频免费 | 国产91在 | 97超碰免费人妻中文 | 五月婷婷一区 | 最近最新中文字幕免费的一页 | 一级α一级α片免费观看网站 | 久久伊人中文字幕麻豆 | 欧美色道 | 爱操综合网 | 国产理论视频在线观看 | 波多野结衣系列在线 | 天堂在线资源最新版 | 黄色片免费播放 | 秋霞在线骑兵区 | 日本免费一区二区在线观看 | 欧美又黑又大AAA毛片 | www四虎在线高清 | 免费在线看黄的网站 | 天堂在线亚洲 | 91精品国产入口 | 国产免费无码又爽又刺激A片小说 | 亚洲精品无码一区二区卧室 | 狠狠色噜噜狠狠狠狠狠色综合久久 | 色情五月亚洲中文字幕 | 国产黄A片三級三級三級 | 国产自产一区c | 国产电影一曲二曲三曲图片 | 亚洲欧美中文日韩综合图区 | 日韩不卡在线播放 | 男人天堂影院WWW94 | 精品1区2区3区产品乱码 | 一级在线免费视频 | 午夜激情爱爱 | 黄色在线播放网址 | 色吧在线 | 一级毛片aa | 欧美AAAAAABBBBB| 久久久国产精品免费A片蜜臀 | 激情综合五月 | 公和我做爽死我了A片AAB | 快播泷泽萝拉 | 亚洲精品久久无码一区二区大长腿 | 国产天天在线 | 一男一女做爰高潮A片韩剧 一女被多男灌满白浆受孕 一色屋免费精品视频 | 亚洲精品1卡2卡三卡4卡乱码 | 亚洲精品久久久久久AV伊人 | 成人免费观看网欧美片 | 滨崎真绪 | 一个人看的www视频高清免费 | 天天射天天拍 | 亚洲中文有码字幕日本 | 色综合小说天天综合网 | 国产免费黄色网址 | 三级a午夜电影 | 无码一区二区三区曰本A片 无码一区国产欧美在线资源 | 免费看饥渴难耐的少妇软件 | 蜜桃AV亚洲第一区二区 | 最近新免费韩国日本电影 | 性欧美精品 | 永久品色| 日韩不卡高清 | 国产精品69福利视频 | 欧美亚洲日本一区二区三区浪人 | 国产成 人 综合 亚洲网 | 国语普通话对白CHINESE | 国内久久久久久久久久 | 无码日本精品一区二区片 | 日日摸夜夜添夜夜添高潮免费A片 | 中国一级毛片 | 精品无码国产一区二区日本 | 求欧美精品网址 | 6080yy亚洲久久无码 | 欧美制服丝袜在线 | 国产我不卡 | 成人亚洲A片V一区二区三区蜜月 | 李李妮的视频vk | 亚洲学生妹高清AV | 亚洲综合网国产精品一区 | 欧美日韩一区二区不卡三区 | 91网站免费在线观看 | 听党话跟党走始终是共青团坚守的 | 高潮迭起AV乳颜射后入 | 一级毛片成人免费看免费不卡 | A欧美爰片久久毛片A片 | 美日韩在线 | 免费在线亚洲视频 | 在线免费观看黄页 | 99国产精品综合AV无码 | 成人妇女免费播放久久久 | 黄色日本网站 | h肉肉导航| 都市人妻古典武侠另类校园 | 国产真实乱系列 | 中文字幕一区2区 | 理论片在线观看片免费 | 国产片一级aaa毛片视频 | 看一级毛片女人洗澡 | 伊在人线香蕉观看最新2018 | 激情五月婷婷综合 | 无码中文字幕热热久久 | 青青视频观看免费99 | 算你色永久免费视频播放 | 亚洲欧美成人综合久久久 | 日韩精品一区二区三区AV在线观看 | 国内久久久久久久久久 | 久久瑟瑟 | 五月天婷婷视频在线观看 | 国产福利91精品一区二区三区 | 宝贝把内衣脱了我想吃胸 | 黑人巨茎大战白人女40CM | 日本成人在线免费观看 | 2022黄网| 日夜啪啪一区二区三区 | 高清欧美性狂猛bbbbbbxxxx | 欧美精品videosex性欧美 | 99热精品在线av播放 | 亚洲欧美日韩国产制服另类 | 美国免费毛片 | 国产福利一区二区 | 国产福利资源 | 国产亚洲精品品视频在线 | 黑人强伦姧人妻日韩那庞大的 | 国产成人精品曰本亚洲 | 老司机免费午夜精品视频 | 欧美成人精品A片免费区网站 | 九九视频九九 | 免费一级淫片aa | 在线看片 | 亚洲最新永久在线观看 | 欧美精品v欧洲精品 | 中文字幕一级毛片视频 | 丰满多毛少妇做爰视频爽爽和R | 一级毛片成人免费看a | 亚洲最大成人网站 | 国产中文字幕第一页 | 小黄文纯肉短篇 | 色综合久久婷婷天天 | 精品免费国产一区二区三区四区 | 久久人人玩人妻潮喷内射人人 | 三级毛片大全 | 久久五月综合婷婷中文云霸高清 | 成年人免费黄色片 | 欧美日韩精品一区二区三区四区 | av基地| 四虎黄色影院 | 亚洲精品久久99久久一二三区 | 久久精品视频在线看4 | 性欧美激情xxxd | 18成人片黄网站WWW | 中国黄色免费网站 | 国产白拍 | 伊人网综合在线观看 | 四虎精品成人影院在线观看 | 国产亚洲女人久久久久久 | 麻豆自媒体 一区 SWAG | 男女无遮挡猛进猛出免费观看视频 | 色视频免费观看 | 91制片厂果冻传媒天美传媒 | 精品免费国产一区二区三区四区五 | 国语自产拍在线观看偷拍在 | 国产精品乱码久久久久软件 | 婷婷精品视频 | 丰满人妻无码AV一区二区免费 | 国产精品综合色区小说 | 精品日韩二区三区精品视频 | 国产亚洲小视频线播放 | 亏亏插曲叫疼的免费网址 | 青青青国产在线手机免费观看 | 日韩欧美一区二区不卡 | 久久精品国产999久久久 | 一级欧美一级日韩 | 精品久久久无码人妻中文字幕边打电话 | 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 | 日本韩国欧美在线观看 | 九九线精品视频 | 在线精品国产一区二区 | 性色欧美 | 波多野结衣在线免费播放 | 国产AV一区二区三区日韩 | 自拍一区在线 | 毛片站| 菊色宫快播电影 | 波多野结衣精品一区二区三区 | 日本伊人网 | 日本九九视频 | 久久久久久久国产精品 | 谁有毛片网站 | 国产黄色一级毛片 | AV色欲无码人妻中文字幕 | 日本一区二区三区免费看 | 婷婷开心激情综合五月天 | 爽死你个放荡粗暴小淫货h文 | AV亚洲产国偷V产偷V自拍AV | 国产亚洲精品久久久久秋霞不卡 | 亚洲第一欧美 | 欧美在线视频一区二区三区 | 亚洲国产成人精品无码区APP | 91亚洲国产成人久久精品网址 | 国产熟妇BBWBBWBBW歼尸 | 激情丁香小说 | 成人综合网站 | 呻吟国产AV久久一区二区 | 全黄a免费一级毛片人人爱 全古装一级毛片大全 | 在线不欧美 | 自偷自拍亚洲欧美清纯唯美 | 国产精品视频九九九 | 国产精品久久久爽爽爽麻豆色哟哟 | 和漂亮老师做爰5中文字幕 黑巨茎大战俄罗斯白人美女 | 风韵饥渴少妇在线观看 | 国产又色又爽又黄的视频免费观看 | 国产精品 欧美在线 另类小说 | 日本高清免费不卡在线播放 | 久久狠狠第一麻豆婷婷天天 | 黄色激情视频网址 | 在线 亚洲 欧美 | 精品日本久久久久久久久久 | 柠檬福利精品视频导航 | se94se欧美综合色 | 中国护士一级毛片免费版本 | 亚洲精品久久久无码AV片软件 | 最新中文乱码字字幕在线 | 亚洲操 | 97任你碰任你摸任你爽 | 国产成人AV一区二区在线观看 | 泷泽萝拉第一部快播 | 古代荡女丫鬟高H辣文纯肉 古代高H啪肉NP文 | 麻豆XXXXXX在线观看 | 麻豆精品国产精华精华液好用吗 | 97色伦图片97色伦图影院久久 | 成人在线高清不卡免费视频 | 日韩AV无码一区二区三区不卡毛片 | 午夜高清 | 特级淫片aaaa毛片aa视频 | 在线观看中文字幕 | 中文字幕在线视频观看 | 亚洲精品无码成人A片在线小说 | 戳女人屁股流水羞羞漫画 | 午夜一区二区三区 | 黄色一级欧美 | 永久免费观看的毛片的网站下载 | 国产剧情一卡二卡麻豆 | 樱花草视频WWW | 久久精品国产亚洲AV成人 | 国产精品久久久久久久hd | 内射丰满高大五十五岁熟女 | 久久久久国产成人精品 | 免费看的一级毛片 | 国产无套内射久久久国产 | 欧美黑人乱大交 | 91在线视频在线观看 | 男人猛躁进女人毛片A片 | 三级免费黄色片 | 日本一卡二卡不卡视频查询 | 婷婷激情在线视频 | 女人18毛毛片兔费码A片 | 成人无码区免费A片视频日本 | 色之综合天天综合色天天棕色 | 久久亚洲天堂 | 蜜芽国精产品一二三产区 | 天天影视色香欲 | 亚洲最大激情网 | 少妇毛又多又黑A片欧美 | 国产精品扒开腿做爽爽爽王者A片 | 免费看的黄色网址 | 把腿张开JI巴CAO死你H | 一区二区三区在线 | 99只有精品| 豪妇荡乳1一5潘金莲2在线 | 色婷婷五| 国产精品人妻出轨AV大片 | 农村真实夫妇屋内自拍视频 | 久见久热 这里只有精品 | 日本无码看片视频一区 | 久久无码人妻国产一区二区 | 99精品免费观看 | 久久久精 | 天美传媒影视在线网址 | 国产视频最新 | 含着不拔出来 H 1V1 | 亚洲AV成人一区二区三区啪啪 | 国产精品久久久久久亚洲色 | 天天操免费视频 | 国产精品第100页 | 天天色视频 | 韩国色情巜肉欲夜姬 | 最新精品视频2019在线视频 | 国产精品永久在线 | 国产免费AV片在线播放唯爱网 | 一级中文字幕乱码免费 | 色婷婷激婷婷深爱五月小说 | 亚洲综合在线视频自拍 | 欧美大陆日韩一区二区三区 | 99视频这里只有精品国产 | 好好的日视频www | 中国黄色一级毛片 | 国产中文字幕在线免费观看 | 性色欲情网站IWWW九文堂 | 亚洲欧美日本 | 亚洲精品无码成人A片在线软件 | 免费高清资源黄网站在线观看 | 国产精选自拍 | 国产精品一区在线麻豆 | 91制片厂果冻传媒有限公司 | 国产亚洲精品久久久久久移动网络 | 国自产拍偷拍福利精品啪啪 | 日本在线高清不卡 | 亚洲精品影院久久久久久 | 真人做爰直播 试看 | 日日踫夜夜爽无码久久 | 99国产视频| 啪啪免费视频在线观看 | 激情小说在线观看 | 亚洲羞羞视频 | 亚洲免费色视频 | 天天躁日日躁狠狠躁黑人躁 | 国产成人一区免费观看 | 亚洲一区二区免费视频 | 成人深夜视频在线观看 | 91制片厂果冻传媒首页 | 天天综合色天天桴色 | 日本视频电影不卡无玛 | 一区二区三区四区在线 | 欧洲乱码卡1卡2在线 | 91导航福利| 亚洲第一区第二区 | 丁香五月亚洲中文字幕 | H高潮嗯啊娇喘抽搐A片男男视频 | 免费晚上看片www | 国产三级精品三级在专区 | 亚洲成 人图片综合网 | 色客成人网 | 狠狠撸新网站 | 色AV亚洲AV永久无码精品软件 | 老司机精品视频一区二区 | 在线观看免费视频污网站 | 精品国产一区二区三区四区精华液 | 欧美性受xxxx白人性爽 | 91av综合| 少妇AV射精精品蜜桃专区 | 99九九精品视频 | 欧美人与动牲交免费观看视频 | 国产中文字幕乱码免费 | 伦理电影我不卡87 | 亚洲综合无码一区二区 | 大地影院日本韩国电影免费观看 | 国产亚洲中文日本不卡二区 | 99re9精品视频在线 | 欧美日韩中文在线 | 欧美一级美片在线观看免费 | 91精品国产亚洲爽啪在线观看 | 日本中文字幕免费 | 欧美精品久久99人妻无码 | 亚洲AV成人精品网站在线播放 | 午夜A片无码福利1000集 | 西瓜精品国产自在现线 | 日b视频免费看 | 日本三级韩国三级在线观看a级 | 久久免费手机视频 | 操少妇| 我们的生活第七季在线观看免费高清 | 六月丁香中文字幕 | 蜜月a 免费一区二区三区 | 精品国产经典三级在线看 | 国产一区二区三区在线影院 | 色即是空qvod | 精品AV国产一区二区三区 | 天天色情| 苍井空毛片精品久久久 | 人人爱看电影网 | 久久国产精品系列 | 亚洲精品久久久久久久久无码精品 | 无码日本电影一区二区网站 | 99视频精品全部免费 在线 | 999久久欧美人妻一区二区 | 再深点灬舒服灬太大了添A片小说 | 国产人成精品香港三级古代 | 人人干视频在线观看 | 免费看污又色又爽又黄又脏小说 | 四虎最新地址通知www | 开心色99| 日韩精品一卡2卡3卡4卡5卡 | 国产毛片在线看 | 国产SUV精品一区二妻 | 久久久久久国产视频 | 麻豆视传媒官方网站入口 | 91久久综合精品国产丝袜长腿 | 五月婷婷六月丁香在线 | 夜夜躁狠狠躁日日躁2021 | 借贷宝裸照 | 91情侣在线精品国产免费 | 亚洲A片不卡无码久久 | 久久精麻豆亚洲AV国产品 | 日本三级香港三级国产三级 | 人妻一区日韩二区国产欧美的无码 | 国产刺激熟女短视频在线观看 | 日韩三级网址 | 亚洲激情黄色 | 国产强伦姧人妻完整版 | 草莓app色版 | 陈书婷被肉干高H潮文 | 精品久久久久久久无码久中文字幕 | 亚洲视频一区在线观看 | 日本哎哎哎视频免费1000 | 开心色 | 久久成人18免费网站 | 免费视频99 | 国产综合久久久久久鬼色 | 一本色道无码道在线 | 色多多www | 天美一二三传媒免费观看 | 88av视频 | 老司机午夜剧场 | 一个人观看的免费视频 | 亚洲巨乳日本无码一二三区 | 玖玖视频精品 | 黄色免费网站在线看 | 女人被添WWW.A片 | 国产目拍亚洲精品一区二区三区 | 一区二区三区不卡在线 | 免费被黄网站在观看 | 91制片厂果冻传媒天美传媒 | 波多野结衣人妻渴望A片 | 成人导航网站 | 国产免费无码又爽又刺激A片小说 | 欧美性狂猛bbbbbbxxxx | 日本黄色免费网址 | 国产成人精品久久免费动漫 | 欧美毛片 | 88av免费观看入口在线 | 欧美日本国产VA高清CABAL | 久在线| 精品丰满人妻AV久久久 | 视频一区二区欧美日韩在线 | 国产日本高清免费视频在线观看 | 无码人妻一区二区三区A片 无码任你躁久久久久久久 无码日本电影一区二区网站 | 欧美视频在线观看免费观 | 国产亚洲精品久久久久久久久动漫 | 中文字幕免费观看视频 | 免费高清日本 | 香蕉乱码成人久久天堂爱免费 | 国产超91 | 欧美一级在线全免费 | 天天干天天日天天射天天操毛片 | 日韩在线免费视频观看 | 最近韩国日本免费高清观看 | 工口 里番 全彩 无码 | 精品国产人妻精品 | 俺也来俺也去俺也射 | 黄网免费在线观看 | 牛牛影视精品一区二区在线看 | 国产免费无码成人A片在线观看 | 日韩一卡二卡三卡四卡免费观在线 | 五月天婷婷视频在线观看 | AV无码国产精品午夜A片麻豆 | 亚洲欧洲国产成人综合一本 | 国精产品一区一区三区M | 2024夜夜干天天骑日日日 | 无人视频免费观看免费直播下载 | 亚洲精品久久久久一区二区三区 | 人成午夜免费视频在线观看 | 亚洲色熟偷拍视频在线 | 国产精品久久久久久久久久一区 | 亚色成人 | www.毛片 | 亚洲精品福利一区二区在线观看 | 狠狠干狠 | 国产精品18久久久久久欧美 | 日本一区午夜爱爱 | 丁香婷婷在线 | 边做边爱完整版免费视频播放视频 | 最近中文免费字幕1 | 狠狠人妻久久久久久综合九色 | 美日韩在线 | 亚洲国产成人久久 | 日韩一卡2卡三卡4卡无卡网站 | 日本丰满大乳乳液 | 在线成人色情电影网站 | 乱码AV午夜噜噜噜噜 | 小草影院亚洲私人影院 | 亚洲一级黄色毛片 | 国产毛片精品一区二区色欲 | 好久被狂躁A片视频无码免费视频 | 午夜在线视频一区二区三区 | 高清不卡毛片 | 国产精品久久久久久久 | 国产看片视频 | 少妇寂寞找男按摩师性M | 成人黄色在线网站 | 色天使久久综合给合久久97色 | 九九九日产 | 国产精品久久久久久久网站 | 女人高潮A片春色 | 久草青娱乐 | 老司机免费精品视频 |