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

abrangente

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

fsmaymyuo

12 Oct 2025(atualizado 12/10/2025 às 08h34)

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

Temas

Compartilhe

Why_China_is_winning_the_global_EV_race.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 betty cassino onlineits 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

Yorkshire reservoir levels fall below one third despite rainfall.txt

Why Bruce Springsteen will never stop performing.txt moda e os foco moda.

GRáFICOS

nos eixos

'Rubbish and dull. Pointless' How Lord of the Flies was rescued from the reject pile.txt

Why_cant_I_remember_peoples_faces.txt foco e os conhecimento moda.

Navegue por temas

Why_endurance_sport_is_the_new_escape.txt Why_California_and_Texas_are_at_the_centre_of_a_redistricting_battle.txt White_House_denies_Trumps_alleged_birthday_message_to_Epstein_is_authentic.txt Why_AI_chatbots_are_wrong_about_these_LA_protest_photos.txt Why_California_and_Texas_are_at_the_centre_of_a_redistricting_battle.txt Why_China_is_winning_the_global_EV_race.txt Why_King_Charless_trip_to_Canada_is_more_than_just_a_royal_visit.txt Why_do_US_train_stations_look_so_depressing.txt Why_our_brains_are_bad_at_understanding_big_numbers.txt Why_do_French_men_pee_on_the_street.txt
国产精品A成V人在线播放 | 岛国岛国免费V片在线观看 岛国精品无码少妇在线 | 亚洲AV成人一区二区三区啪啪 | a级黄色片网站 | 日日噜噜夜夜狠狠久久丁香婷婷 | 欧美激情一区二区三区AA片 | 欧美啪| 亚洲精品久久区二区三区蜜桃臀 | 免费观看情趣v视频网站 | 日本一本二本免费视频在线观看 | 久亚洲AV无码专区A片 | 97精品国产高清自在线看超 | v天堂| 麻豆XXXXXX在线观看 | 色姑娘综合网 | 天天操天天干天天做 | 亚洲日本欧美在线 | 很详细的肉肉床文片段 | 60岁老年熟妇在线无码 | 特级精品毛片免费观看 | 国产无遮挡A片又黄又爽 | 一区二区三区视频在线观看 | 另类专区另类专区亚洲 | 天天想夜夜操 | 永久免费在线看 | 国产欧洲一卡2卡3卡4卡 | 伊人狠狠丁香婷婷综合尤物 | 国产欧美精品系列在线播放 | 玖玖玖免费观看视频 | 韩国一级黄色毛片 | 免费看高清片国产剧情 | 久久久国产精品 | 亚洲精品蜜桃AV久久久 | 亚洲欧美在线x视频 | 色情狠久久AV五月综合五月 | 国色精品卡一卡2卡3卡4卡免费 | 国产第一综合另类色区奇米 | 玖玖免费| 国产欧美日韩专区发布 | www日韩在线 | 日本少妇裸体做爰高潮片 | 男男GV白嫩小受GV在线播放 | 久久99AV无色码人妻蜜 | 免费国产a国产片高清下载app | 国产亚洲999精品AA片 | 97在线观看播放 | 一级做a爱过程免费视频app | 国产精品涩涩涩视频网站 | 我就是要当着他的面做你 | 一区二区视频在线观看高清视频在线 | 少妇高潮惨叫久久久久久欧美 | 亚洲免费a| 欧美性生交大片免费看A片免费 | 免费看的一级毛片 | 天天影视色香欲综合视频 | 夜夜艹天天干 | 影音先锋男人资源 站 | 黄色免费网站视频 | 波多野结衣久久一区二区 | 亚洲精品久久AV无码麻小说 | 日韩色在线高清无码 | 成人性生交大片免费看中国A片 | 色婷婷一区二区三区四区成人网 | 色在线看| 公妇仑乱小说你yin我荡 | 狠狠色图片 | 成人久久久| 国产伦精品一区二区免费 | 巨大黑人极品videos中国 | 97视频在线免费 | 天天插天天狠天天透 | 久久91久久91精品免费观看 | 开心四房播播 | 樱花草在线观看播放视频www | 公么征服我完整版中文 | 欧美网站www | 91亚洲视频在线观看 | 婷婷综合亚洲爱久久 | 国内精品七七久久影院 | 欧美性A片又硬又粗又大暴力 | 欧美在线高清视频 | 色狠狠色综合吹潮 | 日本在线视 | 日韩福利在线观看 | 四虎影视在线看完整视频 | 日本翁熄系列乱在线视频 | 日韩欧美一区二区三区免费看 | 伊人狠狠 | 国产精品扒开腿做爽爽爽王者A片 | 色久久综合视频本道88 | 国产欧洲一卡2卡3卡4卡 | 新版天堂资源中文在线 | 国产人妻黑人一区二区三区 | 免费观看一级成人毛片软件 | 人人澡人人澡人人澡 | 国产乱女乱子视频在线播放 | 麻豆传煤官网入口免费进入 | 97国产无遮挡A片又黄又爽小说 | 国产传媒18精品A片一区 | 天天干天天操天天插 | 亚洲五月综合自拍区 | 琪琪SEE色原网色原网站18 | 高强度辣爽文 全是肉NP | 大色网我爱看 | 大桥未久a 一区二区 | 很黄很肉的共妻文 | 国产激情无码激情A片免费软件 | 好大好硬好爽18禁视频免费 | 国产中文字幕视频在线观看 | 欧美V亚洲V综合V国产V | 亚洲国产日韩制服在线观看 | 免费99精品国产自在现线 | 黄色毛片视频校园交易 | AV无码国产精品午夜A片麻豆 | 天天狠狠干 | 一级毛片卡 | 97国产精品人妻无码免费 | 99re6在线视频免费精品 | 搞黄网站免费观看 | 欧美日韩在线视频观看 | 永久域名18勿进永久域名3XCC | 天天干在线免费视频 | 激情五月婷婷小说 | 搡女人真爽免费视频大全软件 | 久久婷婷五月综合色国产 | 国产精品无卡无在线播放 | 无码欧美69精品久久久久 | 日本啊啊视频 | 亚洲成av人片在线观看 | 欧美性类s0x | 被双修做到哭H被师尊强迫 被特种兵啪到哭BL 被拖进小树林C了好爽H出租车 | 国精产品一区一区三区MBA下载 | 久久a热 | 99视频久九热精品 | 国产乱码精品一区二区三区四川人 | 成人片黄网站A片免费 | 黄网站免费线观看免费 | 天美传媒影视在线网址 | 男女毛片免费视频看 | 伊在人亚洲香蕉精品区 | 在线视频网站www色 在线视频色在线 | 国产男女猛烈无遮挡A片小说 | 岳艳的胯下做爰岳艳小说 | 黄色香蕉网站 | 久久久久久久久久久9精品视频 | 97色伦图片97色伦图影院久久 | www狠狠操 | 欧美内射深插日本少妇 | 黑人vs亚洲人在线播放 | 久久精品免费大片国产大片 | 最近最新中文字幕大全高清版 | 4438成人情人网站 | 波多野结衣hd系列在线播放 | 亚洲电影在线观看 | 奇米一区二区三区四区久久 | 亚洲AV无码A片在线观看蜜桃 | 少妇与大狼拘作爱性A片 | 国产又黄又硬又湿又黄的A片小说 | 女同学粉嫩无套第一次 | 99热最新在线观看 | 狠狠老司机 | 琪琪电影午夜理论片YY6080 | 国产情侣一区二区三区 | 色护士精品影院www 色狠狠色综合吹潮 | 日韩精品一区二区三区在线观看 | 九九天天影视 | 黄色免费网址在线观看 | 精品视频在线一区 | 狠狠色丁香婷婷综合最新地址 | 国产精品视频自拍 | 一个人观看的免费视频 | 欧美日韓性视頻在線 | 国产一级特黄aaa大片 | 天天操天天干天天爱 | 亚洲精品无码一区二区卧室 | 九九九九精品视频在线播放 | 扬名立万电影在线观看 | 日本不卡免费视频新二区 | 手机在线观看黄色 | 奇米一区二区三区四区久久 | 在线观看 有码 制服 中文 | 成人免费观看网欧美片 | 亚洲AV色香蕉一区二区三区 | 高清av电影 | 国产AV无码专区亚洲AV久久 | 欧美 自拍 在线 综合图区 | 最好的免费电影网站 | 国产在线观看香蕉视频 | 国产精品久久久久毛片真精品 | 久久99热这里只有精品高清 | 日韩欧美精品一区二区三区 | 九九久久精品国产免费看小说 | 91精品国产免费久久久久久 | 中国大陆一级毛片 | 成人午夜视频在线观看 | 国产一二三精品无码不卡日本 | 成人爽a毛片在线视频网站 成人首页 | 免费观看黄A片在线观看 | 最好韩国日本免费高清 | 99精品国产综合久久久久 | 夜夜穞天天穞狠狠穞AV美女按摩 | 国产美女主播一级成人毛片 | 精品在线视频一区 | 新香蕉视频在线 | av影音先锋天堂网 | 日本综合欧美一区二区三区 | www日韩| a网站在线观看免费网站 | 91免费国产在线观看 | 快播色电影 | 色综合天天综合网国产成人网 | 91精品专区 | 欧美色偷偷亚洲天堂bt | 高清精品国内视频 | 国产又粗又黄又爽的A片精华液 | 国产SUV精品一区二区四区三区 | 国产99在线a视频 | 国产亚洲自拍一区 | 久久久久99| 亚洲午夜久久久无码精品网红A片 | 二级黄绝大片中国免费视频 | 黑人巨茎大战欧美白妇免费 | 汗だく爆乳中出しプレスめぐり | 国产成人精品亚洲精品一区色欲 | 狠狠亚洲丁香综合久久 | 美国一级毛片免费 | 麻 豆视频传媒 | 亚洲性久久 | 91精品国产免费青青碰在线观看 | 熟女五十| 99爱在线精品视频网站 | 999国产精华是正规产品吗 | 久爱综合 | 国语自产拍在线观看偷拍 | 精品久久久久成人码免费动漫 | 日日麻批免费视频播放40分钟 | 日韩国产毛片 | 中文字幕乱码在线播放 | 人妻少妇69式99偷拍 | 亚洲最大成人综合网720P | 免费国产黄网在线观看 | 2020天天干 | 日产精品卡2卡三卡乱码网址 | 国产aⅴ片| 日本高清一卡二卡三卡四卡免费 | 日本免费人成在线网站 | 午夜福利32集云播 | 中文字幕天堂中文 | 色偷偷WWW.8888在线观看 | 麻豆文化传媒免费网站 | 亚洲精品无码一区二区色戒 | 国产在线高清一级毛片 | 最好在线观看免费韩国日本电影 | 亚洲天堂中文字幕在线观看 | 久久久精品国产免费A片胖妇女 | 欧美精品XXXXBBBB | 久久亚洲精品玖玖玖玖 | 2015av天堂影音先锋 | 亚洲国产精品嫩草影院在线观看 | 欧美69式囗交视频 | AV资源每日更新网站 | 国产真实伦在线播放 | 李李妮的视频vk | 日产亚洲一区二区三区 | 岳 好紧好爽再浪一点 | 国产在线高清不卡免费播放 | 国产免费又黄又爽又色毛 | 欧美人妖ts| 人妻无码AV一区二区三区 | 亚洲精品久久无码AV片麻豆 | 日本欧美日韩 | 免费看国产黄线在线观看 | 最近中文字幕免费国语6 | 人妻夜夜爽爽88888视频 | 久久bb| 亚洲 欧美 校园 春色 小说 | 色豆豆永久免费网站 | 成人在线激情视频 | 国产日韩在线欧美视频 | 国产成人亚洲精品2020 | 被拖进小树林C了好爽H出租车 | 亚洲精品无码一区二区色戒 | 波多野结衣 美乳人妻 | 国精产品三区四区有限公司 | A片色情内射无码久久 | 国产精品大全国产精品 | 伊人综合在线 | 黄色片视频免费 | 97在线播放 | 欧美1卡一卡二卡三新区 | 中文字幕亚洲第一页 | 色中色 | 国产精品日产三级在线观看 | 国产毛片久久久久久国产毛片 | 欧美日韩色情FTP在线播放 | 国产一起色一起爱 | 欧洲欧美人成视频在线 | 久久99精品免费视频 | 日本一道高清视频1区 | 中文字幕无线手机在线 | 中文无码乱人伦中文视频播放 | 一区二区三区在线免费视频 | 亚洲中文字幕婷婷在线 | 影888午夜理论不卡 樱井莉亚快播 | 久久综合亚洲鲁鲁五月天欧美 | 91一区二区三区四区五区 | 免费大片黄国产在线观看 | 日产国产欧美韩国在线 | 亚洲偷怕 | 91制片厂制作果冻传媒麻豆 | 天天躁日日躁狠狠很躁 | 国产又色又爽无遮挡免费 | 国产妇女乱一性一交 | 影音先锋av999资源网 | 国产精品人妻出轨AV大片 | 黄色动作视频 | 色网在线免费观看 | 欧美日韩视频二区三区 | re99| 色欲久久精品无码一区二区三区 | 国产精品人妻一码二码 | 乱子伦视频在线看 | AV亚洲精品少妇毛片无码 | 国产 欧美 亚洲 日韩视频 | 忘忧草爱网 | 色就色 综合偷拍区 | 欧美乱性 | 王伟忠周梦莹最新章节 | 日韩短视频 | 三级全黄APP播放 | 久久特级毛片 | 亚洲视频一区在线 | 2020天堂在线亚洲精品专区 | 在线成人综合色一区 | 幼香阁网址 | 亚洲一区二区三区四区五区六区 | 黄色三级免费看 | 精品人妻无码一区二区三区绿 | 五月 色| 国产精品99久久久精品无码 | 亚洲AV无码区在线观看东京热 | 狠狠撸 撸你喜欢 | 日本乱码一卡二卡三卡永久 | 先锋五月婷婷丁香草草 | 日韩欧美视频一区二区在线观看 | 国产亚洲精品久久久久久禁果TV | 亚洲毛茸茸 | 天天操夜 | 天天射天天干天天插 | 亚洲免费久久 | 在线观看黄永久免费网站 | 亚洲中文字幕在线播放YW193. | 在线中文天堂最新版官网 | 日本无码一二三区别免费 | 国产一级不卡毛片 | 中文字幕乱码 电影在线观看 | 国产最新凸凹视频免费 | 一区二区播放 | 97视频在线观看免费 | 久久久久久久久国产 | 欧美日韩一区二区不卡三区 | 97免费人妻在线观看 | 窝窝社区精品免费视频 | 98色精品视频在线 | 成年网站在线 | 成年福利片在线观看 | 国产熟妇无码A片AAA毛片视频 | 国产精品黄色 | 吸吮乳尖 | 五月天婷婷激情 | 婷婷五色| 国产1区2区三区不卡 | 成人亚洲A片V一区二区三区小说 | 中文字幕在线免费观看视频 | 国产福利一区二区精品 | 久久大香伊蕉在人线国产昨爱 | 色中色主页 | 2021日日摸夜夜添夜夜添影院 | 国内一级一级毛片a免费 | 女人扒开屁股爽桶30分钟 | 狠狠色丁香婷婷综合 | 午夜私人影院 | 欧美精品hdxxxxx | 酒色网小说 | 色偷偷AV亚洲男人的天堂 | 成人毛片18岁女人毛片免费看 | 国产乱子轮XXX农村 国产伦精品一区二区三区免费 | 免费国产黄网站在线观看视频 | LINODEIPHONE孕妇视频欢迎你 | 永久免费精品视频 | 亚洲区色情区激情区小说色情书 | 国产福利网站 | 欧美z00sk00lkntty猪 | 久久精品久久久久 | 久久久久久一品道精品免费看 | 成人在线激情视频 | 国产精品伦理一区二区三区 | 五月天婷婷网亚洲综合在线 | 日本免费人成在线网站 | 久久有精品 | 中文字幕无线观看高清 | 久久精品国产波多野结衣 | 又硬又粗进去好爽A片 | 工口漫画彩色无遮图片 | 成人在线看片 | 国产成人亚洲精品91专区手机 | 色国产在线视频一区 | 欧美一区a| 日韩欧美在线视频一区二区 | 国产又黄又爽胸又大免费视频 | 全肉整夜不拔男男车文 | 蜜桃少妇AV久久久久久高 | 波多野结衣人妻渴望A片 | 欧美重囗味成人无码区 | 国产精品久久毛片A片杨颖 国产精品久久人妻互换 | 视频一区二区欧美日韩在线 | 日本一线a视频免费观看 | 麻豆国产13p| 国产精品久久综合桃花网 | 欧美一级精品 | 日本无卡码高清免费视频v 日本无码MV免费视频在线 | 久久精品国产久精国产果冻传媒 | 久久精品免观看国产成人 | 精品国精品国产自在久国产不卡 | 深夜成人福利视频 | 成人免费影院 | 亚州久久久久区1区2少妇 | 偷拍精品视频一区二区三区 | 日本视频免费观看 | 色播在线永久免费视频网站 | 成人午夜精品网站在线观看 | 中文字幕在线不卡日本v二区 | 日韩在线你懂的 | 国产熟妇的荡欲午夜视频 | 五月婷婷综合色 | 久久国产精品视频 | 99看视频| 影音先锋男人在线资源资源网 | 成人影院线在线观看免费观看 | 色咪咪网站 | 开心婷婷色 | 五月天激情丁香 | 日韩美女乱淫试看屁视频网站 | 午夜三级毛片 | 亚洲日韩在线视频 | 国产一卡2卡3卡4卡网站免费 | 人人干操 | 韩国伦理片在线2018 | 嗯真紧又湿又软 | 日韩中文字幕视频在线 | 国产色情AAA级AAA电影 | 美女扒开腿让男人桶爽APP免费看 | 欧美猛交XXX无码黑寡妇 | 最新亚洲国产手机在线 | 被一根又一根H强迫NP快穿 | jizz在线观看国产精品 | 国产三级精品三级在线观看 | 漂亮人妻洗澡被强BD中文 | 欧美视频在线观看免费 | 亚洲色欲色欲www在线观看 | 99久久精品国内 | 国产手机在线自在拍 | 日本丰满大乳人妻无码水卜樱 | 度年华在线观看全集免费播放 | 波多野结衣免费观看视频 | 国内卡一卡二卡三免费网站 | 爱唯侦查地址发布 | 亚洲精品无码成人A片九色播放 | 欧美日韩视频在线第一区二区三区 | 亚洲午夜在线 | 色中色 最新地址 | 风流少妇A片一区二区蜜桃 风流少妇与黑人做爰 | 2020国产欧洲精品视频 | 爽到喷水(H)小说 | 国产午夜福利视频第三区 | 最近的2024中文字幕国语版 小说 | 2024夜夜干天天天爽 | 国内精品一卡2卡3卡四卡 | 亚洲一区二区三区在线免费观看 | 欧美激情无码视频一二三 | 99久久精品免费精品国产 | 日韩色情图片小说AV一区 | 2024夜夜干天天骑日日日 | 亚洲AV网站 | 蜜桃视频m3u8在线观看 | 国产精品无卡无在线播放 | 伦理电影在线视频网站天堂 | 美国毛片毛片全部免费 | 激情综合丁香婷婷色五月 | 日日摸天天爽天天爽视频 | 欧美色视| 开心五月 激情五月 深爱五月 | 最近最新中文字幕免费1 | 黄色片网站视频 | 一区二区三区日韩免费播放 | 国产一区免费在线观看 | 午夜亚洲精品久久一区二区 | 国产一级精品视频 | 午夜视频免费在线观看 | 成人黄色一级片 | 中文字幕婷婷 | 中文字幕亚洲码 在线观看 中文字幕无线观看在 | 极品少妇XXXX精品少妇偷拍 | 人人爽久久久噜噜噜丁香AV | av高清| 伊人久久大香网 | 激情综合五月 | 2020年精品国产品在线网站 | 日本在线不卡免费 | 欧美成人精品a8198v无码 | 日本高清视频在线的 | 97无码人妻精品1国产精东影业 | 久久久久久久久66精品片 | 亚洲国产成人一区二区在线 | 亚洲色综合成人 | 好爽又高潮了毛片免费下载 | 亚洲精品免费视频 | 烽火三月 | 葫芦娃.combo3.0深夜释放自己 | 谁有色网站 | 中文字幕人妻丰满熟女 | 巜隔壁放荡人妻bd高清 | 亚洲AV鲁丝一区二区三区 | 久久91精品国产一区二区 | 男女野外做爰全过程69影院 | 日本精品无码特级毛片 | 精品国产污污免费网站 | 99视频都是精品热在线播放 | 欧美人成在线视频 | 欧美剧场 | 麻豆一区二区免费播放网站 | 桃子视频直播高清在线 | 久久综合桃花 | A欧美爰片久久毛片A片 | 国产色女人 | 亚洲成人一区 | 99re热这里只有精品视频 | 日韩高清欧美 | 按摩做爰A片在线播放 | 国产极品粉嫩交性大片 | 香蕉爱视频 | 欧美中文一区 | 国产成人18黄网站在线观看网站 | 黄色在线网站观看 | 上课时男同桌狂揉我下面污文 | 亚洲精品无码高潮喷水A片在线 | 奇米影视v1.1 | 99久久精品免费国产一区二区三区 | 李宗瑞29.7g种子 | 美女扒开尿口让男人桶进 | 国产精品一区二区三区四区五区 | 黄A片A二級二級二免费看 | jizz欧洲| 男男震蛋电动PLAY道具 | 久久久欧美国产精品人妻噜噜 | 亚洲五月婷 | 非洲女人与禽zozo性 | 国产福利在线高清导航大全 | 天天射天天干天天 | 亚洲 欧美 国产 图片 | 永久免费精品视频 | 国产精品久久久久久久久久久久 | 国产成人亚洲精品91专区手机 | 国产精品扒开做爽爽爽的视频 | 度年华在线观看全集免费播放 | 狠狠操网站 | 办公室疯狂高潮呻吟摸揉A片欧美 | 欧美久久久久 | 男生解开内衣揉捏胸视频 | 国产亚洲欧美日韩综合综合二区 | 8050午夜二级一片 | 闺蜜把春药放进我下面那个 | 日韩免费中文字幕 | jizz亚洲| 极品美女扒开粉嫩小泬图片 | 中文字幕在线看片成人 | 欧美巨大另类极品video | 亚洲国产精品免费观看 | 老师的兔子好软水好多无弹窗 | 色噜噜狠狠色综合久夜色撩人 | 日b视频免费 | 99heicom视频| 天堂 亚洲 av 日韩 | 波多野结衣久久国产精品 | 欧美激情综合 | 国产特黄特色a级在线视频 国产素人自拍 | 日本jizz视频 | 色12| 国产免费观看黄A片又黄又硬小说 | 午夜福利电影网站鲁片大全 | 欧美xxxx做受视频 | jizz日本大全 | 边做边爱播放免费观看 | 91天堂视频 | 日本免费一区视频 | 欧美黄a | 国产成年无码V片在线 | 快播酒色网| 黄色网免费看 | 99热亚洲| 真人试爱视频120分钟 | 亚洲2024无矿砖码砖区 | 精品国产乱码久久久久久小说 | 欧美成人精品a8198v无码 | 久久久精品免费 | 亚洲AV久久无码精品影视 | 乱肉合集乱500篇小说书架下载TXT | 99热久久这里只有精品 | 国产精品一区二区AV白丝在线 | 8x网站免费入口在线观看 | 96精品国产高清在线看入口 | 婷婷亚洲图片 | 精品一卡2卡三卡4卡乱码免费 | 久久免费视频在线观看6 | 天天干天天爱天天操 | 亚洲熟妇色自偷自拍另类 | 美女扒开尿道让男人捅 | 男子扒开美女尿口做羞羞的事 | 韩国伦理片在线2018 | 欧美激情一区二区A片成人 欧美激情内射喷水高潮 | 中文字幕乱码熟女人妻水蜜桃 | 5a级毛片 | 电影我爱灰太狼 | 视频一区视频二区在线观看 | jizz免费看| 中文天堂www资源 | 99麻豆精品国产人妻无码 | 国产人妻人伦精品熟女A片 国产人妻无码鲁丝片久久麻豆 | 李宗瑞29.7g种子 | 午夜视频在线观看国产 | 色婷婷综合激情中文在线 | 一个色综合久久 | 免费一级夫妻a | k8禁忌美国在线观看 | 日日摸天天碰中文字幕你懂的 | 日韩毛片免费 | 国产内射在线激情一区 | 2021国产成人综合亚洲精品 | 五月天色婷婷丁香 | 办公室疯狂高潮呻吟摸揉A片欧美 | 国内外成人色情视频 | 嗯求你插我H文 | 老妇的两片 肉唇 翻进翻出 | 伊人精品视频直播 | 尤物精品国产第一福利三区 | 久久久久久久久久久久久久久久久久久久 | 中文字幕乱人伦视频在线 | 久久国产AVJUST麻豆 | 一体一道久久88色合综合网 | 国内精品乱码卡一卡2卡三卡 | 久久久久国产亚洲日本 | 三A级做爰片免费观看国产电影 | EEUSS鲁片一区二区三区 | 青青青国产手机在线播放 | 91在线视频导航 | 久久99国产精品二区不卡 | 正在播放一区二区 | 日本高清WWW无色夜在线视频 | 手机福利视频导航 | 日韩经典中文字幕 | 99久久99久久精品免费看子 | 欧美性色黄大片四虎影视 | 国模无水印一区二区三区 | 最近中文字幕无吗免费 | 无码国产一区二区三区四区 | 国产片AV片永久免费观看 | 一级毛片不卡片免费观看 | 午夜三级毛片 | 最近免费2019中文字幕大全 | 免费一级毛片不卡在线播放 | 香港三级日本三级妇三级 | 亚洲精品亚洲人成人网裸体艺术 | 欧美日韩精品高清一区二区 | 五月开心六月伊人色婷婷 | 国产成人午夜精品5599 | 夫妻性姿势真人做视频 | 国偷自产视频一区二区99 | 2022精品天堂在线视频 | 国内精品一区无码中文在线 | 无码日本精品久久久久久 | 欧美成人精品第一区首页 | 中文字幕在线免费 | 在线播放69热精品视频 | 中文字幕 制服 亚洲 另类 | 最近新韩国hd视频 | 中文字幕 日韩 人妻 无码 | 色一情一乱一乱一区99AV | 99re视频精品全部免费 | 欧美日韩亚洲一区二区三区在线观看 | 哪里能看毛片 | 一二三四日本中文在线 | 国产九精品国产动漫人物 | 国产精品久久精品第一页不卡 | 波多野结衣中文丝袜字幕 | 无图 亚洲 欧美 偷拍 | 四虎影视免费看 | 麻豆文化传媒网站入口 | 松岛枫百度影音 | 狠狠骚| 婷婷丁香五月缴情视频 | 99亚洲狠狠色综合久久位 | 免费涩涩屋草莓榴莲秋葵绿巨人 | 玖欧美性生交XXXXX无码 | 超级狂色而且免费又超好看 | 99热.com | 国模沟沟一区二区三区 | 成人看片黄a免费 | 玖玖爱视频在线观看 | 贵州美女一级纯黄大片 | 好看的电影你懂的 | 日本亚洲成人 | caoporn免费在线视频 | 国产资源视频在线观看 | 玖玖在线播放 | 爱福利视频一区 | 欧美毛片 | 日韩欧美伦理片 | 我爱灰太狼电影 | 疯狂揉小泬到失禁高潮AV | 亚洲精品欧美精品日韩精品 | 光根电影院理论片午夜 | 日本熟妇乱人伦A片一区 | 午夜福利电影网站鲁片大全 | 色欧美色| 国产手机视频在线观看 | 麻豆天美国产一区在线播放 | 韩国理论片中文线播放最新 | 日本不卡在线观看 | 免费看黄色一级 | 精品乱码一卡2卡三卡4卡网 | 成人免费黄色网 | 丰满少妇69激情啪啪无码 | 亚洲欧美v国产一区二区 | 久久久97丨国产人妻熟女 | a级毛片高清免费视频 | 日本熟妇毛茸茸xxxxx | 日韩美女视频在线观看 | 日本三级一区 | 人与禽ZOZO性伦 | 久久视频精品38在线播放 | 奶大灬舒服灬太大了一进一出 | 国产精品免费小视频 | 少妇老师寂寞高潮免费A片 少妇仑乱A毛片 | 中文字幕不卡在线播放 | 岛国在线无码免费观 | 91黄色视屏| 国内精品伊人久久久久 | 免费看又色又爽又黄的国产 | 伊人综合网22 | h污小舞白丝玉足榨精小说 h重口味小说 | 99蜜桃臀久久久欧美精品 | 亚洲午夜国产片在线观看 | 精品久久亚洲一级α | 免费永久欧美性色xo影院 | 色天使色妺妺网站 | 国产精品亚洲玖玖玖在线靠爱 | 久久人妻内射无码一区三区 | 公粗挺进了我的密道在线播放贝壳 | 久热精品视频在线播放 | 两个女人互添下身爽舒服小说 | 国产精品久久久精品视频 | 免费女人18a级毛片视频 | 一级做a爰片性色毛片思念网 | 日本三级黄色片网站 | 丁香色综合 | 天堂最新在线资源 | 色情狠久久AV五月综合五月 | 图片区小说区激情春色 | 欧美阿v高清资源不卡在线播放 | 九九直播 | 国产又粗又大又爽的A片精华液 | 午夜影院欧美 | 亚洲精品久久久久一区二区三 | 黄瓜污影院 | 狠狠综合久久久久综 | 亚洲AV无码专区A片奶水 | 香蕉成人啪国产精品视频综合网 | 婷婷丁香激情 | 一二三区乱码不卡手机版 | 国产一区二区三区国产精品 | 欧美一级美片在线观看免费 | 人妻少妇69式99偷拍 | 九一抖音成长人版破解安装 | www.欧美成人 | 99自拍视频| 一二三四日本高清无吗 | 内射糙汉高H小说 | 高清欧美性xxxx成熟 | 在线视频精品一区 | 免费无遮挡无码H肉日本动漫 | 国产第一页浮力影院草草 | 欧美成人一区二区三区在线视频 | 色综合久久久高清综合久久久 | 国产又粗又大又黄 | 欧美又粗又深又猛又爽A片 欧美又粗又长A片XXOO在线看 | 天天操天天操天天干 | 黄色网战在线观看 | 清纯校花被调教高H | 久久66热在线视频精品 |