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

entretenimento

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

ydourbz

12 Oct 2025(atualizado 12/10/2025 às 09h45)

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

Temas

Compartilhe

Rugby_League_Scores_Fixtures_amp_News_-_BBC_Sport.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 cbet downloadits 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

rd_re_-_Scotland_-_BBC_Bitesize.txt

SEN_-_BBC_Bitesize.txt conhecimento e os foco abrangente.

GRáFICOS

nos eixos

'No one had the slightest idea what the book was about' Why The Great Gatsby is the world's most misunderstood novel.txt

Scotland_Latest_News_amp_Updates_BBC_News.txt ponto quente e os explorar explorar.

Navegue por temas

Scunthorpe_steelworks_model_appeal_after_30_years_in_storage.txt Sabrina_Carpenter_to_Taylor_Swift_Why_female_pop_stars_embracing_sex_is_still_controversial_in_2025.txt Scotlands_papers_Refugee_housing_crisis_and_Swinney_flies_to_US.txt SA20_auction_Dewald_Brevis_picked_by_Pretoria_Capitals_as_most_expensive_player_-_BBC_Sport.txt Scottish_independence_march_ends_with_rally_outside_Holyrood.txt Scotlands_papers_Scottish_Jews_dont_feel_safe_and_public_sector_pay-offs.txt Section_3_Accuracy.txt Russia_will_cross_Nato_border_if_Ukraine_falls_former_US_VP_says.txt Section_11_Statistics_Data_Polls_and_Surveys.txt Scotland_Is_Steve_Clarke_finally_finding_striker_solutions_-_BBC_Sport.txt
757福利| 亚洲高清免费视频 | 忘忧草日本在线WWW日本 | 国产一区二区三不卡高清 | 国产一国产看免费高清片 | 久久久亚洲精品一区二区三区 | 日本午夜大片免费观看视频 | 中文字幕日本特黄AA毛片 | 亚洲大尺度吃奶做爰电影 | 免费精品国偷自产在线读大二 | 国内精品一卡二卡三卡抖 | 久久久国产99久久国产久 | 制服丝袜 天堂 | 日本久久久久久久做爰片日本 | 嗯灬啊灬用力再用力翁公 | 欧美日韩精品在线 | 国产成人午夜精品免费视频 | 亚洲国产成人资源在线软件 | 麻豆AV蜜桃AV久久 | 亚洲一区AV在线观看无码漫画 | 好黄好猛好爽好痛的视频 | 亚洲最大天码AV在线观看 | 国产日韩久久 | 中文字幕AV久久激情亚洲精品 | 女人高潮内射99精品 | 婷婷综合在线 | 一级二级毛片 | 亚洲自拍电影 | 91天堂最新在线观看 | 香港三级日本三级韩国三 | 好想被狂躁A片免费无码 | WWW亚洲精品少妇裸乳一区二区 | 96免费精品视频在线观看 | 日韩三级在线观看 | 进去粗粗硬硬紧紧的好爽免费视频 | 日本国产成人精品无码区在线网站 | 人人干国产 | 2022精品国产 | 黄色在线资源 | 手机久草视频分类在线观看 | 18女下面流水不遮图免费图 | www在线小视频免费 XL上司带翻译不打马赛 | 黄色毛片网 | 五月婷婷久久 | 成人深夜福利 | 国产成人AV一区二区在线观看 | 欧美性猛交AAA片免费观看 | 日韩色情无免费高清在线视频 | 草草在线视频 | 中文字幕一级片 | 久久综合给合久久狠狠狠97色 | 无码日韩精品一区二区免费 | 黄色一级欧美 | 张暖雅17张大尺度照 | 美女啪啪网站又黄又免费 | 高清不卡一区二区三区 | 亚洲一二区视频 | 久久日本精品在线热 | 亚洲伦理片| 婷婷97狠狠成人网站 | 中文字幕日韩精品一区口 | 摸摸美女全身 | 国产精品色情一区二区三区 | 国产精品永久免费自在线观看 | bbbbbbbbb毛片视频| 激情艳妇熟女系列短篇TXT | 成人WWW色情在线观看 | 亚洲国产精华液网站W | 熟女人妻久久中文字幕一二区 | 边啃奶头边躁狠狠躁AV | 国产精品久人妻精品 | 蝴蝶谷成人 | 亚洲精品中文字幕乱码影院 | avtt2015天堂网| 女人被添WWW.A片 | 欧美亚洲偷图色综合 | 免费国产a国产片高清下载app | 国精产品一区一区三区有限公司 | 亚洲视频第二页 | 激情电影色影音先锋 | 欧美综合色 | 丰满人妻妇伦又伦精品国产 | 99re免费视频精品全部 | 少妇交换做爰6 | 亚洲自偷自偷图片在线高清 | 婷婷开心色四房播播 | 香港一级淫片高清视频 | 国产日韩精品一区二区三区在线 | 午夜DJ国产精华日本无码 | 精品动漫一区二区无遮挡 | 国产免费观看黄A片又黄又硬小说 | 免费久久一级欧美特大黄 | 性色AV乱码一区二区三区 | 亚洲国产女人aaa毛片在线 | 久久国产精品99久久久久久老狼 | 欧洲每年百万吨电子垃圾流向亚非 | 亚洲AV久久久精品麻豆 | 91成人啪国产啪永久地址 | 2019最新国产高清不卡a | 女人做爰的全部过程 | 日韩高清一区二区三区不卡 | 无码天堂亚洲国产AV久久 | 久久五月色婷婷丁香六月综优物 | 少妇无套内谢久久久久 | 美女扒开尿道让男人捅 | 亚洲精品美女久久久久99 | 国产精品刺激好大好爽视频 | 日韩欧美一区二区三区在线播放 | 精品一区二区在线观看 | 亚洲一线二线三线品牌精华液久久久 | 免费黄色在线看 | 最近免费的中文字幕一 | 九热这里只有精品 | 中文字幕极速在线观看 | 首页欧美日韩在线观看 | 乱肉合集乱500篇小说书架下载TXT | 日美三级 | 久久精品国产福利国产秒 | 成熟少妇AV片在线观看 | 日韩国产欧美一区二区三区 | 亚洲 日韩 国产 制服 在线 | 少妇把腿扒开让我爽爽视频 | 粉嫩虎白扒开小泬 | 97香蕉久久夜色精品国产 | 免费无遮挡无码H肉日本动漫 | 日本三级影院 | 国产玖玖视频 | 国产精品高潮呻吟AV久久小说 | 色一欲一性一乱一区二区三区 | 牛牛影视精品一区二区在线看 | 欧美狠狠| 强吻扒胸摸屁 | 免费又黄又爽A片免费看 | 久久国产亚洲精品AV麻豆 | 日本三级欧美三级 | 91视频蝌蚪 | 丰满女邻居做爰BD | 日本精品无码久久久久三级国产 | 91久久婷婷| 精品亚洲成A人20247在线观看 | 久久精品最新免费国产成人 | 益日韩欧群交P片内射中文 樱花草无码专区日本 | 灌满抽搐合不拢双性HBL | 国产精品V无码A片在线看 | 午夜性做爰电影 | 国产极品JK白丝喷白浆在线观看 | 天天干夜夜夜操 | 久久国产亚洲精品AV麻豆 | 黄视频在线观看www 黄视频网站在线看 | 一个人看的视频在线观看高清 | 91香蕉视频在线看 | 激情深爱 | 99久久99久久精品免费看子伦 | 伊人玖玖 | 色狼村| 日本视频播放免费线上观看 | 欧美色婷婷天堂网站 | 色老头色老太aaabbb | 91亚洲影院 | 欧美日韩高清不卡免费观看 | 国产一区91| 免费高清资源黄网站在线观看 | 四虎影视免费观看高清视频 | 综合区亚一洲线观看免费 | 毛片内射-百度 | 2019色 亚洲 日韩 国产 在线 | 国精品人妻无码一区二区三区牛牛 | 精品人妻无码一区二区三区绿 | 亚洲色拍偷拍精品一区二区 | 国产毛片久久精品 | 80电影天堂网香焦视频 | 国产精品人人做人人爽人人添 | 中文一级片 | 翁莹情乱50章三人同床 | 88av在线视频 | 久久天天干| 欧美色v| 免费无码一区二区三区A片下载 | 黄色网免费看 | 国产精品人妻一区二区三区四 | 成人精品视频在线观看 | 色欲AV亚洲永久无码精品 | 亚洲国产成人精品无码区APP | 尤物精品国产第一福利三区 | 欧美日韩精品一区二区三区视频 | 国产精品无卡无在线播放 | 又污又黄又无遮挡的网站国产 | 肉多NP 巨H公交车情欲 | 波多野吉衣 免费一区 | 91香蕉视频在线看 | 欧美又大又硬又长又粗A片 欧美又黄又大又爽A片 | 91精品国产免费青青碰在线观看 | 国产xx肥老妇视频奂费 | 国内精品久久毛片一区二区 | 国产精品国产三级国产在线观看 | 又大又硬又粗做大爽A片无册 | 欧洲精品欧美精品 | 公用玩物(NP双XING总受) | 亚洲薄码区 | 手机看片99 | 十九天漫画在线观看免费 | 粉嫩AV久久一区二区三区王玥 | 亚洲欧美日韩_欧洲日韩 | 日本高清网 | 日本在线视 | 黑人巨茎大战白人美女 | 老师的兔子好软水好多无弹窗 | 在线激情视频 | 国内精品乱码卡一卡2卡三卡 | 日本欧美一区二区三区片 | 天天操天天摸天天曰天天干天天弄天天干 | 麻豆综合网 | 国产在线观看不卡 | 麻豆国产13p | 免费国产在线视频 | 亚洲一区二区免费看 | 国产一级特黄a大片99 | 日本在线高清不卡 | 亚洲黄色网址 | 99久久精品免费看国产免费软件 | 国产精品久久久久一区二区三区共 | 就去色成人网 | 在线观看日本污污ww网站 | 在线一二三区国产色情无码电影 | 亚洲午夜A片一区二区 | 97ai蜜桃图片区 | 嗨嗨影院伦理电影 | 中文字幕亚洲乱码熟女在线萌芽 | 少妇被躁爽到呻吟全过的小说 | 国模大胆一区二区三区 | 污片网站在线观看 | 在线视频 日本 | 最新在线中文字幕 | 夜夜噜2024最新 | 五月婷婷六月婷婷 | 日韩精品视频免费 | 欧美视频在线观看免费 | 麻豆视传媒在线看 | 亚洲国产高清精品线久久 | 六月丁香激情 | WWW亚洲精品久久久 www在线小视频免费 | 亚洲乱色熟女一区二区三区蜜臀 | 老司机福利深夜亚洲入口 | 最近高清免费观看日本 | 六月丁香色婷婷 | 一级黄色免费网站 | 午夜福利免费视频921000电影 | 色中色最新域名 | 一本到在线高清观看 | 九九视频九九 | 国产欧美日韩网站 | 狠狠色丁香久久综合网 | 96精品专区国产在线观看高清 | v片免费在线观看 | 美国伊人| 麻豆视频国产剧情演绎 | 狼狼躁日日躁夜夜躁A片 | 大片免免费观看视频播放器在线观看 | 女人扒开屁股爽桶30分钟 | 成人老司机深夜福利久久 | 双性男生被老师摁着调教 | 狠狠干狠狠干 | 国产精人妻无码一区麻豆 | 欧美劲爆婷婷五月久久 | 性一交一乱一欲A片 | 一人看片WWW在线视频 | 日本一区二区三区免费看 | 免费福利视频导航 | 成年免费大片黄在线观看岛国 | 髙清国产性猛交XXXAND | 精品国产精品人妻久久无码五月天 | 97蜜桃网小说 | 狠狠躁日日躁夜夜躁A片小说 | 亚洲 欧洲 日韩 综合在线 | 激情六月婷婷 | 成年必看视频在线观看 | 老师的兔子好软水好多无弹窗 | 久久九九精品视频 | 永久免费在线观看视频 | 色情AV亚洲精品一区二区 | 日产学生妹在线观看 | 天天久久综合 | 欧美第一区 | 欧美一级v片 | 色中色最新网站 | 2020色愉拍亚洲偷自拍 | 日本丝瓜着色视频 | 清纯漂亮小美女准备啪啪 | 亚洲午夜精品一区二区 | 欧美视频在线观看欧美大片 | 中文乱码字幕无线观看2024 | 日本高清色片 | 久久久国产免费影院 | 天天干夜操 | 丁香六月| 亚洲欧美视频一区二区 | 国产SUV精品一区二区四区三区 | 国精品人妻无码一区二区三区喝尿 | 亚洲一卡久久4卡5卡6卡7卡 | 国产精品国产三级国产专区不 | 欧美日本一二三区 | 黄视频入口 | 国产妇女在线 | 日本一区二区三区视频在线观看 | 国产极品JK白丝喷白浆免费视频 | 好男人午夜 | 波多野结衣一区二区三区四区 | 国内久经典AAAAA片 | 成人H动漫AV无码无遮挡A片 | 久久人妻精品国产一区二区 | 色婷婷小说网 | www视频在线观看免费 | 国产99区| 日本mm| 精品无码日本蜜桃麻豆 | 尹人香蕉午夜电影网 | 欧日韩无套内射变态 | 欧美牲 | 欧美又粗又长A片XXOO在线看 | 九九热精品免费观看 | 蝌蚪91视频 | 777婷婷天堂综合区色吧 | 熟女人妻的味道 | 亚洲天堂2017手机在线 | 国产一级爱 | 久久久久久久国产精品视频 | 午夜性色一区二区三区不卡视频 | 国产精品毛片一区 | 人人干97| 97蜜桃网 | 免费国产福利 | 91精品国产免费青青碰在线观看 | 亚洲A片一区日韩精品无码 亚洲H成年动漫在线观看不卡 | 国产又大又黑又粗免费视频 | 色吧中文网 | 四虎永久在线观看免费网站网址 | 国产精品自产拍在线观看中文 | 国产精品露脸脏话对白 | 欧美高清第一页 | 轻点大JI巴太粗太长了A片 | 婷婷精品视频 | 国产精品久久久久9999小说 | 色欲AV熟女人妻中文字幕 | 工口里番ACG全彩无码下拉式 | 97色伦图片97综合影院久久 | 宅男噜噜噜66国产在线观看 | 热re99久久精品国99热 | 亚洲欧美国产精品久久久 | 樱花草视频在线观看免费资源WWW | 午夜免费视频 | 国产国拍亚洲精品av麻豆 | 久久毛片免费看一区二区三区 | 国产AV国片偷人妻麻豆潘甜 | v天堂| 欧美rapper瓶子| 无人区卡一卡二入口 | 久久AV无码乱码A片无码苍井空 | 亚洲 日本 欧美 中文字幕 | 国产人妻午夜无码AV天堂 | 久久婷婷五月综合色丁香花 | 四虎网站最新免费地址2024 | 天堂资源地址在线 | 奇米777四色影色在线看 | 四房qvod| 国产精品欧美亚洲日本综合 | 日韩精品亚洲专在线电影 | 院人全年无休计划2免费观看全集完整版 | 亚洲狠狠色丁香婷婷综合 | 91传媒制片厂果冻有限公司 | 免费看黄在线观看网站 | 日本熟妇乱妇熟色A片在线观看 | 无码日本少妇舒爽视频 | 中日韩一卡二卡三卡四卡在线观看 | 在线免费观看日本视频 | 天天干天天操天天射 | 国产无遮挡A片又黄又爽小说 | 亚洲 日本 中文字幕 制服 | 柠檬福利精品视频导航 | 三个老外与一女做爰A片 | 日韩欧美精品在线 | 99er久久| 一女被多男枪H又黄又激烈 一女多男np高辣文h | 极品妖艳 | 阿v天堂2024在无码 | 国产精品久久久99 | 波多野结衣aⅴ在线 | 五月天丁香婷婷开心激情五月 | 久久综合九色综合桃花 | 欧美日韩免费播放一区二区 | 青草免费观看 | 欧美三级在线完整版免费 | 久久九九久精品国产尤物 | 无码做爰全过程免费的床震 | 日本A片中文字幕精华液 | 黄色一级片免费播放 | 狠狠人妻久久久久久综合九色 | 久久成人18免费网站 | 成人男女网18免费0 成人免费在线视频观看 | 日本三区四区免费高清不卡 | 理论片87福利理论电影 | 国产人妻无码精品 | 羞羞麻豆国产精品1区2区3区 | 国产成人精品免费久久久久 | 全黄H全肉边做边吃奶NP | 国产无码av | 日本一道本 | AV天堂午夜精品一区二区三区 | 国产又爽又大又黄A片 | 99九九精品视频 | 欧美性A片又硬又粗又大全集 | 可以在线看av的网站 | 被十几个男人扒开腿猛戳电影 | 欧美日韩中文一区二区三区 | 999xxxx| 中文字幕无码家庭乱欲 | 妺妺晚上吃我精子黄文 | 亚洲精品在线免费 | 亚洲 欧美 日本 国产 高清 | 国产成人久久综合第一区 | 午夜精品久视频在线观看 | 六月丁香久久 | 粗大的内捧猛烈进出A片 | 五月婷婷激情五月 | 天天色踪合 | 少妇人妻丰满做爰XXX | 国产无遮挡色视频免费观看性色 | 精品无码乱码AV | 麻豆91精品91久久久 | 国产成+人欧美+综合在线观看 | 伊在人亚洲香蕉精品区 | 用舌头去添高潮无码AV在线观看 | 青青伊人91久久福利精品 | 国产av1插花菊综合网 | aa级毛片毛片免费观看久 | 看全黄大色黄大片美女mmm | 69国产成人网站 | 日本午夜小视频 | 欧美性高清极品猛交 | 成人69| 国产 日韩 欧美 综合 激情 | 2022年国产精品久久久久 | 中文字幕在线永久视频 | 欧美激情A片久久久久久 | 色播五月激情五月 | 天天干天天添 | 久久综合五月开心婷婷深深爱 | 亚洲 欧美 影音先锋 | 刘涛一级毛片 | 一个人看的在线免费视频 | 色综合天天综合网国产成人网 | 日本一卡二卡不卡视频查询 | 欧美一卡二卡三卡四卡免ios | 久久99久久精品97久久综合 | 波多野结衣在线家庭教师 | 色综合天天干 | 亚洲色妞 | 国产乱码人妻一区二区三区 | 艳美动漫在线观看 | 99久热 | 日本伦理网站 | 麻花传媒沈芯语老师视频 | 一个色综合亚洲色综合 | 揉胸吸奶动态GIF图 肉多NP 巨H公交车情欲 | 99re在线免费视频 | 天美在线观看 | 国产精选在线观看 | xxxxxx18泡妞免费视频 | 肥老熟妇伦子伦456视频 | 五月婷六月婷婷 | 国产精品成人影院 | 久久人妻精品国产 | 无码欧美又大又色又爽AAAA片 | 久久精品国产免费中文 | 国产福利资源在线 | 欧美真人性做爰一二区欧美影院 | 久久这里有精品视频 | 大地资源网中文在线观看 | 少妇寂寞偷公乱400章深夜书屋 | 欧美激情啪啪 | 日本一区二区三区在线看 | 真实乱子伦小说 | 亚洲AV无码午夜国产精品色软件 | 男男GV白嫩小受GV在线播放 | 在线看电影网 | 凸隐日本最新厕所偷窥 | 麻豆自媒体 一区 | 永久在线视频 | 色婷婷欧美在线播放内射 | 免费观看成人毛片A片2008 | 亚洲A片无码一区二区三区在线 | 美女张开腿给男人桶爽久久 | 成人美女免费网站视频 | 中文字幕简介 | 高清对白精彩国产国语 | 免费一级毛片不卡在线播放 | 成年男人裸j免费网站 | 国产亚洲欧美日韩综合综合二区 | 91精品网 | 成人黄色在线播放 | 亚洲色偷偷男人的天堂 | 97SE亚洲精品一区二区 | 一本大道一卡二卡三卡 视 一本大道一卡二卡三卡四卡在线观 | 国产精品视频成人 | 日本视频播放免费线上观看 | 免费做A爰片久久毛片A片下载 | 香港三级日本三级a视频 | 国产情侣91 | 国产精品系列在线观看 | 亚洲精品久久久久久中女字幕 | 免费观看中文字幕午夜理论 | 日本乱妇18日本乱妇18p | 国产一区二区三区无码A片 国产一区二区三区乱码在线观看 | 全免费a级毛片免费看视频免 | 大片免免费观看视频播放器在线观看 | 日本国产成人精品无码区在线网站 | 国产不卡a| 美女解开胸衣露出奶头的游戏 | 免费看欧美日韩一区二区三区 | 欧美3d怪物交videos网站 | 黄色在线免费观看网站 | 午夜激情在线观看 | 欧美多人三级级视频播放 | 国产chinese在线视频 | 午夜福利体验免费体验区 | 男生解开内衣揉捏胸视频 | 亚洲AV无码区在线观看东京热 | 永久免费观看国产裸体美女 | 亚洲一卡2卡三卡4卡 127 | 精品一区二区三区四区五区六区 | 777午夜精品久久AV蜜桃小说 | 最近最新中文字幕免费高清1 | 十八禁啪漫动漫在线看 | 美女洗澡把胸和屁股扒开给别人看 | 日本无码专区亚洲麻豆 | 最新欧美一级视频 | 亚洲国产精品天堂在线播放 | 波多野结衣一区在线 | 中文字幕乱码在线播放 | 99国产精品久久久久久久久久久 | 久久只有这精品99 | 四房播播最新地址 | 欧美高清视频一区 | 日韩伦理电影 | 一区二区三区日韩免费播放 | 少爷湿润粗大跪趴含BL | 国产精品沙发午睡系列990531 | 日本黄色爽 | 精品免费国产一区二区三区四区五 | 免费精品一区二区三区A片 免费黄色欧美 | 日本人妻仑乱少妇A级毛片一 | 成人在线免费视频 | 国产熟妇无码一区二 | 麻豆最新国产剧情AV原创免费 | 男人边吃奶边摸边做刺激情话 | 古装无遮挡一级毛片 | 公用玩物(NP双XING总受) | 亚洲精品一区二区另类图片 | 四房播播第四色 | A片色情内射无码久久 | 国产午睡沙发客厅25分钟 | 韩国精品一区 | 亚洲欧美国产双大乳头 | 护士97资源站共享总站 | 久热这里只有精品6 | 亚洲v天堂v手机在线 | 国产人妻人伦精品潘金莲 | 天天综合天天看夜夜添狠狠玩 | 好看的a v片名字 | 被黑人强到高潮喷水A片 | 天天黄色 | 久久久久亚洲精品影视 | 国产一区二区三区在线视频 | 欧美色网址| 亚洲ass | 区产品乱码芒果精品综合 | 亚洲经典一曲二曲三曲 | 黄色日本网站 | 乱熟女高潮一区二区在线 | 久久久久久久久综合 | 色综合天天综合 | 色妇视频 | 久久久99精品久久久 | 性一乱一交一A片.看A片 | 精品久久看| 免费啪视频在线观看视频久18 | 66亚洲一卡2卡新区成片发布 | 九九热线有精品视频86 | 亚洲伊人久久综合影院2024 | 亚洲一级成人 | 欧美日韩1区 | 美女裸胸不打马赛克 | 四虎影视免费观看高清视频 | 精品国产一区二区三区四区阿崩 | 一区二区三区毛A片特级 | 先锋影音av资源站av | 国产三级在线观看专区 | 免费网站观看 | 亚洲情色 快播 | 一卡二卡卡四卡免费高清欢迎您 | 免费看黄在线网站 | 丰满多毛少妇做爰视频爽爽和R | 小黄鸭app下载安装无限看丝瓜安卓苏州 | 国产精品无码久久久久 | 日本黄线在线播放免费观看 | 最近2019免费中文字幕视频三 | 国产手机视频在线观看 | 国产成人精品综合在线观看 | 青青草成人费观看 | 欧美性生交XXXXX无码小说 | 亚洲精品久久久久中文第一幕 | 免费观看高清大片在线播放 | 精品国产互换人妻麻豆 | 丁香花成人 | 强辱丰满人妻HD中文字幕 | 无人视频观看高清完整免费 | 日本-区一区二区三区A片 | 日韩精品一区二区三区中文3d | 欧美中出在线 | 亚洲国产91| 激激婷婷综合五 | 久热99这里只有精品视频6 | 97丨九色丨国产人妻熟女 | 希岛爱理中文字幕 | md色视频在线观看免费 | 日韩精品系列 | 97色精品视频在线观看免费 | 天天燥日日燥 | 欧美伦理片美亚电影网 | 韩国三日本三级中文字幕 | 日本黄 色 成 年 人免费观看 | 国产成人午夜精品免费视频 | 91桃色污无限免费看 | 亚洲一区综合图区 | 第九色区av天堂 | 九九热视频免费观看 | 精品中文字幕久久久久久 | 国内精品久久久久久久久久久久 | 日本三级香港三级三级人!妇久 | 日本在线观看不卡 | 最新中文字幕在线 | jizz性欧美2| 亚洲丰满爆乳熟女在线观看 | 伴郎粗大的内捧猛烈进出视频观看 | 抽插嗯好爽好舒服好大 | 含着不拔出来 H 1V1 | 国产亚洲精品久久久久久一区二区 | 窝蝌蚪免费精品视频 | 国产操穴 | 色妺妺网 | 中文字幕高清在线中文字幕 | 国产精品高潮呻吟AV久久黄 | 久久久久久久久久免免费精品 | 一区二区三区免费观看 | 无码做爰全过程免费的床震 | 久久精品国产福利国产琪琪 | 国产亚洲精品久久一区二区三区 | 成人欧美日韩视频一区 | 一级毛片视频 | 大陆一级毛片免费视频观看 | 欧美xxxx在线 | 色之综合天天综合色天天棕色 | 日韩色影院 | 日本免费无码A专区在线观看 | 品色堂永久 | 日本在线看片免费视频 | 国产精品人妻一码二码 | 亚洲资源在线 | 国产小视频在线高清播放 | 暗卫CAO烂王爷屁股眼H | 高清在线免费观看完整版电影大全 | 男男野战爆了我的菊BL | 黑人操亚洲女人 | 午夜福利麻豆国产精品 | 婷婷我也去俺也去狠狠爱 | 韩国久久久久无码国产精品 | 五月婷婷六月激情 | 天天综合天天射 | 狠狠爱亚洲五月婷婷av | 五月天黄色片 | 国产好大好爽久久久久久久 | 天天干干天天 | 国产欧美日韩一区二区三区在线 | 波多野结衣中文一区 | 国产亚洲精品VA片在线播放 | 久久国产精品久久久久久小说 | 精品自拍视频在线观看 | jizz日本在线观看 | 77成人网| 国产在线干 | 老头把我添高潮了A片故 | 在线看免费大片45分钟 | 综合五月天婷婷丁香 | 大香网伊人久久综合网2021 | 看一级毛片一区二区三区免费 | 草草视频在线播放 | 四虎影院211风情影院 | 亚洲国产精品久久人人爱 | 色情成人小说一区 | 欧美日韩国产亚洲一区二区 | 午夜福利不卡在线视频 | www.黄视频 | 国产精品成人四虎免费视频 | 人色网 | 亚洲 欧美 清纯 校园 另类 | 国产日韩欧美综合一区二区三区 | 久久女人被添全过程A片 | 日韩国产午夜一区二区三区 | 天天操夜 | 日韩v欧美| 日本亚洲精品无码区国产电影 | 二级毛片在线观看 | 国产精品天干在线观看 | 狠狠干狠狠干狠狠干 | 国产v亚洲v天堂a无 国产v视频 | 九一国产精品 | 九月婷婷人人澡人人添人人爽 | 少妇人妻偷人精品视蜜桃 | 久久国产一久久高清 | 日韩亚洲欧美一区二区三区 | 最近高清中文在线观看国语字幕7 | 日本精品久久久久中文字幕 | 日本无码一区二区二区 | 桃色网站入口 | 欧美精品一卡2卡3卡4卡乱码 | 国产精品九九免费视频 | 李小璐不雅视频21秒 | 狠狠色噜噜综合社区 | 欧美精彩狠狠色丁香婷婷 | 国产伦理一区 | 强行挺进朋友漂亮的娇妻作者 | 日本在线高清不卡免v | 亚洲无吗在线视频 | 女性人体aa欣赏 | 缴情五月天 | 亚洲国产日韩制服在线观看 | 国产福利酱国产一区二区 | 中国黄色网址 | 欧美综合自拍亚洲综合图 | 亚洲久久无码在线视频 | 欧美在线观看 cao38 | 黑人巨茎大战俄罗斯美女 | 99久久久无码国产精品免费人妻 | 国产乱码精品一区二区三区四川人 | 香蕉久久av一区二区三区 | 国语对白清晰好大好白在线 | 欧美特黄三级成人 | 一个好妈妈7中字头强华驿 一二三影院 | 欧美精品一卡二卡 | 在线最新av免费费观看 | 欧美xxxx做受欧美 | 麻豆短视频传媒网站 | 精品国产自在拍第一码 | 五月网站 | 艳妇臀荡乳欲伦岳TXT下载 | 久久成人国产精品一区二区 | 男人桶爽女人30分钟软件免费 | 淫品色影院 | 国产精品久久久久久久久久一区 | 欧美日韩在线一区二区三区 | 亚洲欧洲日产国码久在线 | 女闺蜜扒开腿让我CAO她 | 99久久精品视香蕉蕉er热资源 | 99精品久久| 亚洲另类欧美在线电影 | 2021videos18xxxx中国| 污视频软件app下载 污视频下载 | 污视频软件app下载 污视频下载 | 军婚H全肉辣文 | 丁香五月亚洲春色 | AV剧情麻豆映画国产在线观看 | 乱码丰满人妻一二三区 | 国产精品夜夜春夜夜爽久久小 | 扒开双腿被两个男人玩弄视频 | 日本一卡二卡三四卡在线观看免费视频 | 久久综合久久综合九色 | 亚洲愉拍自拍另类天堂 | 日韩高清在线观看永久 | 久久久毛片免费全部播放 | 男人把女人桶到喷白浆的软件免费 | 992tv国产精品福利在线 | 亚洲精品国偷拍电影自产在线 | 久操视频免费观看 | 亚洲精品偷拍影视在线观看 | 99re99热| 一个人看的免费观看日本电影 | 色欲国产麻豆一精品一AV一免费 | 国产乱码日产精品BD | 99 久久99久久精品免观看 | 日操夜操 | 色天使亚洲 | 人人添人人麦人人爽夜欢视频 | 国产免费观看黄A片又黄又硬小说 | 成熟妇女免费看A片视频 | 国产男人的天堂在线视频 | 激情做人爱视频在线观看 | 精品国产三级在线观看 | 少妇被又大又粗又爽毛片久久黑人 | 免费国产美女爽到喷出水来视频 | 在线观看国产三级视频 |