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

genmi

10 Oct 2025(atualizado 10/10/2025 às 01h34)

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

Temas

Compartilhe

BBCcom_Content_Index_for_August_10_2021.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 concurso da lotofácil 2277its simplicity': The benefits of cleaning with vinegarSkip to contentBritish Broadcasting CorporationRegisterSign InHomeNewsSportBusinessInnovationCultureArtsTravelEarthAudioVideoLiveHomeNewsIsrael-Gaza WarWar in UkraineUS & CanadaUKUK PoliticsEnglandN. IrelandN. Ireland PoliticsScotlandScotland PoliticsWalesWales PoliticsAfricaAsiaChinaIndiaAustraliaEuropeLatin AmericaMiddle EastIn PicturesBBC InDepthBBC VerifySportBusinessExecutive LoungeTechnology of BusinessFuture of BusinessInnovationTechnologyScience & HealthArtificial IntelligenceAI v the MindCultureFilm & TVMusicArt & DesignStyleBooksEntertainment NewsArtsArts in MotionTravelDestinationsAfricaAntarcticaAsiaAustralia and PacificCaribbean & BermudaCentral AmericaEuropeMiddle EastNorth AmericaSouth AmericaWorld’s TableCulture & ExperiencesAdventuresThe SpeciaListTo the Ends of The Earth EarthNatural WondersWeather & ScienceClimate SolutionsSustainable BusinessGreen LivingAudioPodcast CategoriesRadioAudio FAQsVideoLiveLive NewsLive SportHomeNewsSportBusinessInnovationCultureArtsTravelEarthAudioVideoLiveWeatherNewsletters'Its strength is its simplicity': The benefits of cleaning with vinegar24 April 2025ShareSaveKatarina ZimmerShareSaveGetty Images(Credit: Getty Images)Katarina Zimmer put vinegar to the test as a cleaning product and discovered a wide range of benefits, for people and the planet.A few months ago in my new Berlin apartment, my toilet and I were at war. No amount of scrubbing or toilet cleaner would evict the limescale coating inside. Frustrated, I turned to Google and stumbled across a page recommending vinegar – something that the previous inhabitant had left behind in abundance. After dropping two tablespoons full of "Essigessenz" – essentially concentrated vinegar – into the toilet and waiting for half an hour, I scrubbed and the limescale came off in a moment. Since then, I've enthusiastically used vinegar to rid my world of limescale. I've found it even more effective than my regular kitchen spray cleaner for getting my sink sparkling. That includes the faucet, which I wrapped in a vinegar-soaked kitchen tissue – whereas my regular cleaning spray dribbled off. And rather than having to buy special tablets to clean my limescale-smothered glass kettle, I simply poured two tablespoons of concentrated vinegar inside and boiled it. As the limescale crackled off, it made a satisfying sizzling sound.I wondered if vinegar had other advantages. Did it also kill off bacteria and other germs? And, importantly, was this simple, natural product better for the environment and for my health than regular cleaning products? The internet is full of sustainability influencers and green cleaning blogs that advertise vinegar as a jack-of-all-trades and a safer and "greener" alternative to "toxic" cleaning products. These claims make sense on the surface; vinegar is after all just fermented alcohol and has long been used as a food preservative, in salad dressings, as well as a household cleaner – but I wanted evidence. After interviewing three experts, I learned that while some of these claims are true, the benefits of vinegar depend a lot on how it's used and the kind of grime you're trying to get rid of.Getty ImagesLimescale dissolves more easily in acidic fluids like vinegar (Credit: Getty Images)Reassuringly, Eric Beckman, a chemical engineer and emeritus professor at the University of Pittsburgh in Pennsylvania, told me that the best cleaning use for acetic acid – the main component of vinegar – is exactly what I had been using it for: as a descaler. Limescale – and rust, for that matter – consists of certain ions that dissolve more easily in acidic fluids like vinegar, he says. Beckman uses vinegar himself to get limescale off mirrors, while the microbiologist Dirk Bockmühl of Germany's Rhine-Waal University of Applied Sciences prefers using lemon juice, which contains citric acid, which he says is a more effective descaler and smells better. (Read more about why vinegar is such an effective cleaner.)That said, vinegar doesn't work on everything. Beckman says that soap does a better job at removing oily films on dishes, while baking soda is effective against processed oils that have stuck onto surfaces while cooking. (Read more about whether baking soda is environmentally friendly).However, Beckman expresses exasperation about a popular remedy of mixing vinegar together with baking soda. The mixture is chemically quite useless, he says, as the acid of vinegar and the base of baking soda effectively cancel each other out. "I use both, but not together," says Beckman. "Together, they give you nothing."   And while vinegar is often touted as a powerful antimicrobial, Bockmühl says, the truth is more nuanced. In a 2020 study, Bockmühl and his colleagues put vinegar to the test against a selection of disease-causing bacteria, viruses and fungi. While many internet recommendations suggest adding a dash of vinegar into a bucket of water for cleaning, Bockmühl found that its anti-microbial effects only kick in at an acetic acid concentration of 5% – its concentration in pure vinegar. And it was only fully effective at distilled concentrations of 10%  – to which the researchers added a dash of citric acid – in killing off five common bacteria, including Escherichia coli and Staphylococcus aureus, as well as a mould, a yeast and a weakened strain of the vaccinia virus. Other studies have found that similar concentrations also work against Sars-CoV-2, the virus that causes Covid-19.  But even these concentrations didn't work against the MRSA bacterium, an especially stubborn strain of Staphylococcus aureus that's resistant to certain antibiotics, while countless bacteria remain untested. Many bacteria – including the ones that ferment alcohol into vinegar – thrive in acids, Beckman adds: "Then they'll be like, 'ooh, yay, vinegar.'" Some moulds, too, are resistant to acetic acid while some viruses – like norovirus – might be, too, Bockmühl suspects. Beckman says that soaps are more effective against bacteria, while standard disinfectants work better against viruses and moulds. Harsh treatments like bleach will definitely kill everything, Beckman says – although bleach can be unsafe if used incorrectly.Getty ImagesVinegar is less effective against processed oils that have stuck onto surfaces during cooking (Credit: Getty Images)Bockmühl stresses that, even for the germs that vinegar does kill, a relatively high concentration is needed. The concentration won't be adequate "if you just put a teaspoon of vinegar into your cleaning solution", Bockmühl says. However, the higher the dose of acetic acid, the more irritating it can be on the skin, he adds. It is harmful if it gets into your eyes. Surfaces can suffer, too: vinegar corrodes natural stone and metals like copper, bronze and brass, according to the Italian chemist Dario Bressanini's book The Science of Cleaning. And in dishwashers or washing machines, it can harm the rubber gaskets used to seal them, while it could also damage coffee machines and strip away the coating on tiles and grout, Bressanini writes. But Bockmühl assures me that it's fine to use vinegar on glass and ceramic surfaces – like my toilet – and stainless steel sinks.The trouble that Bockmühl sees with using homemade cleaning products is that they don't come with instructions or safety recommendations. "They might be safe if you know what you're doing," he says, "but there are a lot of really stupid and absurd recommendations on the internet".More like this:? Are you cleaning your water bottle enough?? Why you might want to change your bedclothes more often? Seven proven ways to help the planet in 2025 To learn more about how the health risks of vinegar compare with those of conventional cleaners, I called up Nicola Carslaw, professor of indoor air chemistry at the University of York in the UK. Her concern is how cleaners disrupt the air in our homes and buildings. It's known that professional domestic cleaners tend to have higher rates of asthma than other occupational groups, although it's proven difficult to pin that on any single product or ingredient.In a recent study, Carslaw and her colleagues tested 23 different cleaning products including dishwasher fluid, washing up liquid and spray products, and found that many of them released volatile chemical compounds (VOCs). Some of these compounds, like terpenes, are often added to give pleasant aromas, such as lavender or pine oil, but they're highly reactive in the atmosphere. Terpenes for instance, easily react with ozone in the air, creating miniscule particles. In general, inhaling particles of this size has been linked to lung and heart disease."Your nose is a really good filter for the big particles, but the smaller ones can get all the way into your lungs [and] into the bloodstream," Carslaw says. Interestingly, in her study she found that cleaning products marketed as "natural" or "green" didn't seem any healthier in this regard. "The natural/green ones had as many, if not more VOCs as the standard cleaners, and in many cases they were more reactive," she says.Vinegar passes muster on any sustainability scale because it's simple and it's degradable – Eric BeckmanBut vinegar, by contrast, only consists of water and acetic acid (and a few other substances that make the difference between red and wine vinegar, for instance). As such, "it's just not going to be chemically reactive in the same way", Carslaw says. Another advantage of vinegar is that it's usually applied on a cloth to wipe surfaces rather than used as a spray, Carslaw adds. Research shows that cleaning products applied in spray form have more harmful effects on the respiratory system than liquids and wipes. (Read more about the health risks associated with cleaning products in Jessica Bradley's story). "When you spray something, you're turning the chemical into a form that's much easier to breathe [in] than if you have the liquid," Carslaw says. That said, she always advises gloves when there's risk of skin contact, good ventilation and avoiding excessive cleaning, whatever product is used. (Read more about whether we're cleaning too much for our own good).Getty ImagesVinegar quickly breaks down and therefore its environmental impact is low (Credit: Getty Images)This all left me with one remaining question: is using vinegar more environmentally friendly than conventional cleaners? That's a hard question to answer, says Beckman. Ideally, there would be life cycle analyses for cleaning products which track impacts from cradle to grave, tracing each ingredient back to its source, how it's produced, transported, packaged and eventually disposed of. But very few companies do that thoroughly, even if they do brand their products as "green", Beckman says. "But I will say this about vinegar. [Its] strength is its simplicity," Beckman says. Conventional cleaners can consist of more than a dozen different ingredients, many of them industrially manufactured in energy-consuming processes, he says. Acetic acid is born through the natural, yeast-driven fermentation of alcohol, which itself comes from the natural fermentation of sugar. The biggest environmental impact of vinegar-making is where the sugar came from – whether it's grapes, apples, grains, potatoes, or rice – which are largely renewable resources. Bockmühl cautions that this only applies to naturally fermented vinegars, the ones typically sold as food products; there are also synthetic vinegars which are derived from fossil fuels, meaning they come with all the environmentally harmful impacts of oil and gas extraction.  Even at the very end of its life, vinegar has little impact. While many ingredients in soaps are tough molecules and don't easily biodegrade, sometimes continuing to kill organisms once they're in the environment, vinegar quickly breaks down, Beckman says. "Vinegar passes muster on any sustainability scale because it's simple and it's degradable," he says. After discovering all of this, I felt even better about using vinegar. I probably won't rely on it for ridding my surfaces of germs, but I'll keep using it to remove limescale and look forward to trying it out on the next rusty item I find. I'm happy to put up with the smell, knowing that I'm using a sustainable product that's likely better for my health. --For essential climate news and hopeful developments to your inbox, sign up to the Future Earth newsletter, while The Essential List delivers a handpicked selection of features and insights twice a week.For more science, technology, environment and health stories from the BBC, follow us on Facebook, X and Instagram.EarthSustainability on a ShoestringHygieneHealthSustainabilityEnvironmentClimateScienceFeaturesWatchExplaining how a touchscreen works with a sausageBritish mathematician Hannah Fry digs into the science of touchscreens.4 Aug 2025ScienceSeven images that transformed our world viewWatch how the maps and images of our planet from above have changed over the last two millennia.30 Apr 2025EarthTen striking images of an Earth scarred by humansFrom a shipwrecking yard in Bangladesh to a river of iron dioxide in Canada, a deep dive in Ed Burtynsky's work.16 Apr 2025EarthWhat's inside a black hole?Black holes are one of the mysteries of the universe where all the laws of nature as we know them stop working.9 Apr 2025ScienceUsing bubbles to remove forever chemicals from our waterBBC Click visits a UK research team working on a solution to remove toxic chemicals known as PFAS from water.27 Mar 2025ScienceHow sex with Neanderthals changed us foreverWe find out what we gained when Homo sapiens mated with Homo neanderthalensis many thousands of years ago.18 Mar 2025ScienceTheory of Evolution: How did Charles Darwin come up with it?The British naturalist embarked on an extraordinary journey, did hundreds of experiments, and wrote for 20 years.12 Feb 2025ScienceRaja the elephant asking for a road tollIn Sri Lanka, a charming elephant cheekily halts traffic for treats. 29 Jan 2025EarthInside the hidden world of rhino romanceWatch two rhinoceroses involved in a game of 'kiss and chase'.24 Jan 2025EarthThe power of hugs for reducing inflammation in the bodyDr. Lisa Dahlgren discusses the effect human touch has on our health and wellbeing.22 Jan 2025HealthA mother tiger on a fierce hunt to feed her cubsWhile her three offspring take a leisurely bath, this Bengal tiger mother must find food for the entire family.16 Jan 2025EarthHow foxes outsmart world's heaviest raptor in quest for foodWatch red foxes challenge the Steller's sea eagle, the world's heaviest raptor, as they search for food in Japan.8 Jan 2025EarthHomo juluensis: Possible 'new ancient human' identifiedResearchers may have identified a new human species that lived around 300,000 years ago in Asia.6 Jan 2025ScienceMum saves baby seal with a clever trickWatch as David Attenborough reveals the unique behaviour of a mother seal to protect her pup in icy waters.31 Dec 2024EarthHow Arctic communities protect themselves from avalanchesBBC Click finds out how local communities in Svalbard use technology to combat avalanches and heavy snowfall.31 Dec 2024ScienceMountain goats: A death-defying battle to mateWatch the world's largest species of goat fight for the right to mate, teetering on the edge of perilous drops.17 Dec 2024EarthThe near miraculous escape of a cave swiftThe Tam Nam Lod Cave is home to over a quarter of a million swifts. But there are hidden dangers.12 Dec 2024EarthMeet the mudskipper: The remarkable fish that lives on landThe mudskipper is a fish that can leap with a flick of its tail. Watch a particularly agile specimen in action.3 Dec 2024EarthWatch the dramatic escape of tiny fish from deadly sharksThe Moorish idol, a dramatic little fish with dazzling stripes, adopts a clever strategy to save its life.27 Nov 2024EarthEarth tides: Why our planet's crust has tides tooHow do they differ from the ocean? A geophysicist breaks it down for us.28 Sep 2024Weather & scienceMore from the BBC3 hrs agoFarmer, 37, dies after missing out on new treatment Robin Elcock was unable to access new treatment for brain tumours as he did not have the necessary tissue.3 hrs ago4 hrs agoDementia suits show how tricky daily tasks can beThe simulation suits are helping health staff understand the frustration patients face every day.4 hrs ago4 hrs agoBlood cancer treatments come on 'leaps and bounds'A Wiltshire woman, who is now in remission, says new treatments are also much gentler on the body. 4 hrs ago8 hrs agoPostcode lottery for new cancer treatments, doctors warnExperts say bureaucracy is "stifling innovation" and that applying for funding to pay for new treatments can be "cumbersome".8 hrs ago8 hrs agoDr Xand: Stress is normal. Here's how to manage it betterStress, in small doses, can be good for us. Here are five simple, science-backed ways to manage it better. 8 hrs agoBritish Broadcasting CorporationHomeNewsSportBusinessInnovationCultureArtsTravelEarthAudioVideoLiveWeatherBBC ShopBritBoxBBC in other languagesFollow BBC on:Terms of UseAbout the BBCPrivacy PolicyCookiesAccessibility HelpContact the BBCAdvertise with usDo not share or sell my infoBBC.com Help & FAQsContent IndexCopyright 2025 BBC. All rights reserved. The BBC is not responsible for the content of external sites. Read about our approach to external linking. 

NEWSLETTER GRATUITA

Nexo | Hoje

Your_pictures_on_the_theme_of_monochrome_.txt

BBCcom_Content_Index_for_April_7_2022.txt ponto quente e os ponto quente conhecimento.

GRáFICOS

nos eixos

Your_Friends_and_Neighbors_review_Radically_different_from_any_other_show.txt

BBCcom_Content_Index_for_April_9_2021.txt abrangente e os lazer abrangente.

Navegue por temas

BBCcom_Content_Index_for_April_6_2024.txt BBCcom_Content_Index_for_April_29_2022.txt BBCcom_Content_Index_for_April_6_2022.txt BBCcom_Content_Index_for_April_2_2020.txt BBCcom_Content_Index_for_April_4_2019.txt BBCcom_Content_Index_for_April_9_2020.txt BBCcom_Content_Index_for_August_10_2021.txt BBCcom_Content_Index_for_August_10_2019.txt BBCcom_Content_Index_for_April_30_2024.txt BBCcom_Content_Index_for_April_4_2018.txt
色人阁网| 男同免费视频大全69 | 久久精品中文騷妇女内射 | 精品夜色国产国偷自产在线 | 免费一级特黄欧美大片久久网 | 夭天干天天做天天免费看 | 好男人视频社区精品免费 | 欧美一区二区三区视频在线观看 | 国产精品久久久久影院色 | 国产亚洲精品久久久一区 | 蜜桃精品成人影片 | 欧美精品无码一二三区网站 | 亚洲免费资源 | 亚洲色无色A片一区二区农夫山泉 | 日韩一区二区超清视频 | 久久国产精品久久久久久 | 无码潮喷A片无码高潮软件 无码潮喷A片无码高潮小说 | 在线日韩视频 | 少妇性L交大片免 | 天天成人综合网 | 四虎影视在线影院在线观看观看 | 雯雅婷4去码截图 | 最近中文字幕免费手机版 | 国模少妇一区二区三区A片 国内精品A片XXX久久久 | 小说高黄全肉 | 久久国产情侣 | 久久精品视频3 | 日韩精品综合 | 中文字幕视频免费在线观看 | 欧美干b视频 | 日韩精品一区二区三区中文 | 欧美日韩精品在线 | 欧美亚洲精品一区二三区8V | 亚洲区色情区激情区小说色情书 | 2021久久精品99精品久久 | 国产精品无码一区二区在线A片 | 欧美不卡一区二区三区 | AV每日更新 在线观看 | 欲爱免费观看高清完整版 | 嫩草院一区二区乱码 | 久久综合给合久久97色美利坚 | 激情综合丁香婷婷色五月 | 黄色毛片视频校园交易 | 长篇肉戏香艳完本小说排行榜 | 麻豆国产传媒18精品A片 | 小黄鸭app下载安装无限看丝瓜安卓苏州 | 97久久超碰中文字幕 | 新版中文在线资源 | 丁香五月天的最新地址 | 在线视频99 | 高清电视剧 ok影视 高清成人影院 | 国产成人亚洲影视在线 | 午夜男人视频 | 国产精品av免费观看 | 中文无码人妻在线一区不卡 | 秋霞电院影伦理 | 亚洲欧美网 | 国产日韩最新系 | 亚洲欧洲成人 | 日韩欧美成末人一区二区三区 | 亚洲人成在线播放 | 色中色 | 久草免费福利资源站在线观看 | 闺蜜把春药放进我下面那个 | 亚洲 欧美精品 | 宅男噜噜噜一区二区三区 | 美国色综合 | yy直播不雅视频完整版 | 欧美日韩中文亚洲v在线综合 | 香港黄页精品视频在线 | 美女视频秀色福利视频 | 久久99热只有频精品6狠狠 | 亚洲手机在线观看 | 欧美xxxx做受欧美88bbw | 精品人妻无码一区二区三区4 | 桃花综合久久久久久久久久网 | 久久综合伊人中文字幕 | 国产精品69白浆在线观看免费 | 伊人22综合网 | 亚洲怡红院频在线视频 | 狠狠躁日日躁夜夜躁A片55动漫 | 日韩亚洲国产中文字幕欧美 | 欧美人与物videos新另类性 | 成人YY视频在线观看 | 欧美日韩不卡视频一区二区三区 | 久久久毛片免费全部播放 | 九九精品久久 | 日韩无人区码卡二卡3卡4卡介绍 | 日本一道在线播放高清 | 野香蕉99香蕉 | 欧洲一卡2卡3卡4卡乱码视频 | 香蕉影院在线播放伊人 | 国产精品夜夜春夜夜爽久久小 | 欧美大屁股熟妇BBBBBB | 麻豆出品必是精品 | 一区二区三区免费观看 | 欧美视屏| 日本一本二本三区无码 | 亚洲国产精品久久精品成人网站 | 丁香视频在线 | 中文字幕在线视频播放 | 卡1卡2卡3精品推荐老狼 | 夜夜夜操 | 无码人妻丰满熟妇啪啪区日韩久久 | 曰本道人妻丰满AV久久 | 亚洲综合无码一区二区 | 亚洲国产三级在线观看 | 野外xxx | 国产最新电影 | 日本免费视频一区一区 | 女bbwxxxx非洲黑人 | 你懂的中文字幕 | 色即是空1快播 | 国产精品JIZZ在线观看A片 | 欧美三级电影网 | 久久91精品国产91久久麻豆 | 美味三姐妹在线观看 | 精品在线视频一区 | 日本色网址 | 消息称老熟妇乱视频一区二区 | 免费亚洲黄色 | 欧美激情内射喷水高潮 | 国产亚洲精品久久久久小 | 亚洲性免费 | 天天看片天天干 | 我的战舰能升级动漫免费观看 | 高黄H文各种姿势PLAY道具1V1 | 抖音无限次短视频老司机APP | 日产精品乱码卡一卡2卡三 日产精品卡二卡三卡四卡乱码视频 | 久久亚洲精品高潮综合色A片小说 | 99ri精品| 国产精品夜夜春夜夜爽久久小 | 精品人妻无码一区二区三区4 | 四房播播婷婷基地 | 精品人妻无码一区二区三区蜜桃一 | 欧美 亚洲 另类 综合网 | 久久AAAA片一区二区 | 国产精品人人爽人人做我的可爱 | 日本大片A成人无码超级麻豆 | 国产激情视频在线观看首页 | 春雨电影大全免费观看在线播放 | 精品久久免费视频 | 欧美一级美片在线观看免费 | 性欧美精品videofree高清hd | www.av小视频| 麻豆果冻传媒2024精品传媒一区下载 | 中国农村自拍hdxxxx性自拍 | 狼狼色丁香久久女婷婷综合 | 国产亚洲欧美在线 | 天天干天天做天天操 | 国产一区二区精品尤物 | 波多野结衣中文字幕在线播放 | 国产理论在线 | 亚洲中文字幕国产综合 | 天天干天天色天天 | 色欲天天天综合网免费 | 19国产精品麻豆免费观看 | 亚洲精品无码国产爽快A片 亚洲精品无码成人A片在线软件 | 手机在线黄色网址 | 亚洲 欧美 天堂 综合 | 中文字幕免费视频精品一 | 久久日韩精品无码一区 | 国产一区二区三区免费大片天美 | 殴美激情| 九九re热| 狠狠l撸| 日本无码人妻丰满熟妇A片 日本无码人妻丰满熟妇5G影院 | 日本电影周 | 免费在线观看黄色小视频 | 狠狠色噜噜狠狠狠狠网站视频 | 男女性高爱麻豆 | 天天躁日日2018躁狠狠躁 | 曰本道人妻丰满AV久久 | 96国产下药迷倒白嫩美女 | A级毛片高清免费网站不卡 a级毛片黄色 | 国产日韩精品欧美一区视频 | 天天综合色天天桴色 | 亚洲伊人久久综合影院2024 | 日韩一区二区三区免费体验 | 雨宫琴音 qvod | 色吧最新网址 | 日日噜噜噜夜夜爽爽狠狠视频 | 在线观看视频网站www色 | 国产一区二区三区四区精华 | 青青草免费手机在线视频亚洲视频 | 色婷婷激情五月综合 | 久久精品图片 | 特黄A又粗又大黄又爽A片 | 成人免费20242024被爆出 | 国产又粗又黄又爽的A片精华液 | 国内美女自拍在线视频观看 | 日本俺去也影院 | 在线永久免费观看黄网站 | 视频二区 调教中字 知名国产 | 久久永久视频 | 2022国产成人福利精品视频 | jizz免费一区二区三区 | 日本在线不卡免费视频 | 亚洲免费色 | AV色蜜桃一区二区三区 | 久草app黄 | 波多野结衣高清在线播放 | 泷泽萝拉qvod快播 | 欧美日韩一区二区三区四区在线观看 | 亚洲香蕉在线视频 | 亚洲制服欧美自拍另类 | 亚洲精品国偷拍电影自产在线 | 中文字幕熟女人妻理论片 | 99爱视频免费高清在线观看 | 不良网站在线观看 | 欧美xxxx在线视频 | 成人做爰WWW免费看视频日本 | 亚洲 欧洲 国产 日产 综合 | 久久精品图片 | 国产肥白大熟妇BBBB | 国产鲁鲁视频在线观看免费 | 麻豆精品国产精华精华液好用吗 | 少妇邻居内射在线 | 精品午夜寂寞影院在线观看 | 国内精品乱码卡一卡2卡三卡 | 久久免费看少妇高潮A片JA | 日本欧美不卡一区二区三区在线 | 无码人妻深夜拍拍AAA片 | 亚洲精品做爰无码片 | 国产综合成人亚洲区 | 最近韩国日本免费观看高清 | 精品久久久久久久 | 五月丁香婷姐色 | 国产亚洲一区二区麻豆 | 奇米影视20247久久精品人人爽 | 久久草在线视频国产一 | 风韵丰满熟妇啪啪区老熟熟女 | 在线观看免费高清电影网站 | 日韩欧美在线观看视频一区二区 | 4日本私人vps生活大片 | 日韩一区二区三区免费 | 国产精品久久久久久爽爽爽床戏 | 韩国成人理伦片免费播放 | 免费在线看v片 | 鸥美毛片 | 欧美又硬又粗进去好爽A片 欧美在线视频一区 | 无限看片的动漫视频在线观看 | 日韩亚洲欧美一区二区三区 | 网站在线观看观看免费 | 丁香婷婷开心激情深爱五月 | 天天操天天干天天射 | 中文字幕乱码高清完整版 | 中日韩一卡二卡三卡四卡在线观看 | 九九热在线观看视频 | 日韩黄色网 | 午夜刺激爽爽视频免费观看 | 亚州在线电影免费观看 | 国产成人精品一区二区三区视频 | 亚洲一级毛片免观看 | 天堂成人在线观看 | 97精品国产福利一区二区三区 | 色翁荡熄又大又硬又粗又视频软件 | 秋霞伦理片看福利 | 日日噜噜夜夜狠狠视频欧美人 | 国产真实乱系列 | 在线色| 国产中文字幕视频在线观看 | 麻豆一区二区免费播放网站 | 免费国产在线视频 | 男人猛躁进女人的毛片A片小说 | 欧美精品色视频 | 国产精品一区二区在线观看 | 欧美另类杂交a | 国产aaaaaa | 国产v亚洲v天堂a无 国产v视频 | 色综合色综合色综合网址 | 苍井空免费线在线观看无需下载 | 国内精品久久久久影院老司 | 在线 国产 有码 亚洲 欧美 | 2015av天堂影音先锋 | 天天综合久久久网 | 亚洲日本无码精品无码白石麻衣 | 天天操夜夜逼 | 农村真实夫妇屋内自拍视频 | 黄色免费看片网站 | 好男人免费影院www神马 | 国产亚洲欧美日韩综合综合二区 | 国产精品主播在线高清不卡 | 黄色网址免费看 | 国产成人精品亚洲2020 | 久久中文字幕人妻AV熟女 | 亚洲视频久热九色视频 | 掀起衣服揉她的奶头亲吻视频 | 91香蕉国产 | 国产精品久久久久久搜索 | 免费在线观看黄网 | 一级人做人a爰免费视频 | 国产午夜精品AV一区二区 | 日本大胆欧美人术艺术 | 久久国产精品国语对白 | 我和岳疯狂性做爰全过程 | 男女AA片免费 | 乱H合集系列小说目录男男 乱精品一区字幕二区 | 又硬又粗进去好爽A片 | 开心五月综合激情综合五月 | 银虎导航网 | 一级做a爰片久久免费 | 丰满熟妇啪啪区日韩久久 | jizz免费| 丰满高潮大叫少妇 | 日产精品高潮呻吟AV久久 | 97在线观看 | 国产伦子系列沙发午睡 | 夜鲁鲁鲁夜夜综合视频欧美 | 99在线观看免费视频 | 手机在线国产精品 | 久久婷婷五月综合色精品首页 | 婷婷免费视频 | 色网在线播放 | 蜜桃AV麻豆AV果冻传媒 | 日韩欧美理论 | 亚洲欧美日韩国产精品第不页 | 麻豆XXXXXX在线观看 | 张津瑜和吕知樾事件 | 一道本不卡免费高清在线 | 国产精品一区二区免费 | 中冶葫芦岛有色金属集团有限公司 | 人人玩人人添人人澡欧美 | 神秘感染1在线观看高清完整免费观看 | 久久精品国波多野结衣 | 天天操天天玩 | 精品欧美成人无码专区毛片视频 | 狠狠撸电影 | 艳娒1一6全集在线高清 | 国产乱码精品一区二区三区久久 | 色之综合| 一级α一级α片免费观看网站 | 亚洲国产精品VA在线看黑人 | 毛片资源 | 黄色片视频免费 | 小泽玛利亚 bt | 狠狠色婷婷综合天天久久丁香 | 色婷婷亚洲婷婷7月 | 色欲AV亚洲AV无码精品 | 桐岛永久子ed2k | 欧美午夜春性猛交xxxx | 午夜福利国产在线观看1 | 久久精品人妻无码一区二区三区盗 | 国产成人精品一区二区免费 | 亚洲AVAV天堂AV在线网爱情 | 曰本a在线天堂 | 不卡一卡二卡三亚洲 | 色婷婷网 | 视频二区欧美 | 插的痛的视频一卡二卡三卡 | 婷婷综合 在线 | 周妍希国产福利在线观看 | 成人精品一区日本无码网 | 强壮的公次次弄得我高潮A片日本 | 国语普通话对白CHINESE | 亚洲精品久久 | 古代荡女丫鬟高H辣文纯肉 古代高H啪肉NP文 | 五月色播影音先锋丁香 | 午夜亚洲 | 五月综合激情网 | 精品亚洲日韩国产一二三区 | 女人毛多水多高潮A片 | 翁公的巨物挺进了我密 | 日本一二三不卡视频 | 国产在线综合视频 | 麻豆视频免费观看 | 最近免费更新中文在线观看 | 韩国漂亮老师做爰BD | 婷婷色九月综合激情丁香 | 国产三级精品在线 | 被灌满了嗯不行NP | 天美传媒国产今日推荐 | www.黄网站 | 古装一级毛片免费观看 | 五月天婷婷视频在线观看 | www.黄色在线观看 | 免费无码又爽又刺激A片软软件 | 美女国产毛片A区内射 | 最近新免费韩国日本电影 | 老师洗澡让我吃她胸视频 | 亚洲AV福利天堂一区二区三 | 狠狠色噜噜狠狠狠狠69 | 精品在线播放 | 在线看动漫| 亚洲精品国偷拍电影自产在线 | 以你的名字呼唤我 | 黄色网址免费大全 | 金瓶梅 qvod 结衣波多野种子qvod | 人人操在线播放 | 神马老子影院午夜伦 | 欲盖弄潮快播 | 日本护士xxxxx在线 | 黄色网址大全免费 | 免费韩国伦理2017最新 | 亚洲剧场午夜在线观看 | 成人精品网 | 日韩精品卡4卡5卡6卡7卡3卡 | www黄网| 国产一区二区影院大全 | 99精品wwxx在线观看 | 国产亚洲va在线电影 | www.最色 | 国产一区二区三区四区五在线观看 | 黄页网站在线免费观看 | 精品国产人成亚洲区 | 中文无码欧美人妻日韩精品 | 欧美三级裸露720P | 久久天天躁日日躁狠狠躁 | 在线观看的免费视频 | 九九九影院 | 久久久精品国产免费观看同学 | 电影 国产 偷窥 亚洲 欧美 | 亚洲精品久久久久久久蜜臀老牛 | 高潮无遮挡成人A片在线看 高辣H文黄暴糙汉文H | 色激情五月 | 在线视频激情 | 欧美日韩国产另类一区二区三区 | 国产三级在线观看专区 | 午夜精品久久久久久久99热 | 草cl2016最新地址入口 | 久久九九免费看少妇高潮A片 | 亚洲国产日韩一区二区A片 亚洲国产日韩制服在线观看 | 国产毛片儿| 91日本在线观看亚洲精品 | 丁香wyt | 最近韩国电影免费看HD免费 | 国产精品高潮呻吟AV久久无码 | 91网站免费| 新97在线超级碰碰免费视频 | 乱人妻人伦中文字幕 | avwww在线| 国产亚洲中文日本不卡二区 | 日韩欧美成末人一区二区三区 | 手机看片福利永久925 | 殴美一级| 日本三级在线观看免费 | 四虎在线视频免费观看视频 | www.欧美黄色 | 久久免费视频7 | 亚洲娇小性xxxx | 奇米777狠狠色噜噜狠狠狠 | 97在线观看在线观看 | 中文字幕乱码人在线视频1区 | 欧美精品一卡2卡3卡4卡乱码 | 亚洲精品偷拍AV一区二区 | 天堂最新在线资源 | 俺来也网站| 精品国产乱码久久久久乱码 | 老少做爰XXXXHD老少配 | 最好影院在线免费看 | 强奷乱码欧妇女中文字幕熟女 | 2022免费国产精品福利在线 | 麻豆A片爽爽歪歪爽爽视频看看 | 精品AV一区二区三区久久 | 伊人久久精品亚洲午夜 | 天堂 地址 在线 | 黄色aⅴ| 色哦色哦哦色天天综合 | 成年黄网站色视频免费观看 | 亚洲精品久久久久秋霞 | 高潮迭起AV乳颜射后入 | 扒开双腿被两个男人玩弄视频 | 97免费观看视频 | 幸福人生护士 | 99久久综合九九亚洲 | 性欧美一区 | 色网址之家123图片 色网址之家123 | 色婷婷欧美在线播放内射 | 亚洲日本精品va中文字幕 | jizz日本在线播放 | 精品国产精品人妻久久无码五月天 | 免费无码一区二区三区蜜桃大 | 免费精品国产人妻国语 | 品色堂最新| 天天干天天谢 | 伦理网| 欧美日本二区 | 成年电人电影免费网站 | 人妻无码手机在线中文 | 亚洲第色情一区二区 | 日本好看的电影 | 午夜DV内射一区区 | 成AV人片在线观看WWW | 国产成人无码区免费内射一片色欲 | 欧美孕妇乱大交xxxxx | 伊伊人成亚洲综合人网 | 久久久国产精品福利免费 | 狠狠色噜噜狠狠狠狠98 | 99视频精品全国在线观看 | 国产男人的天堂在线视频 | 色婷婷综合在线 | 精品久久一 | 全古装一级毛片大全 | 国产精品一级二级三级 | www.日| 国产老肥熟| 一级毛片免费下载 | 婷婷六月丁香缴 清 | 欧美色综合高清视频在线 | 她也色在线视频站 | 国产精品亚洲精品久久精品 | 国产精品扒开腿做爽爽爽A片 | 波多野吉衣在线视频 | 天天操天天艹 | h片免费在线观看 | 天天综合网在线 | 欧美阿v高清资源在钱 | 免费精品国产人妻国语麻豆 | 亚洲激情中文 | 天天av天天翘天天综合网 | 久久久久久久国产精品视频 | 亚洲色欲色欲77777小说 | 性色aⅴ在线观看swag | 日本黄H兄妹H动漫一区二区三区 | 色YEYE在线视频观看网站 | 亚洲区偷拍自拍29P 亚洲人成77777A片张津瑜 | 一级毛片免费在线 | 国产激情无码激情A片免费软件 | 最后的朋友结局 | 无码中文字幕在线播放2 | 免费看欧美日韩一区二区三区 | 亚洲天堂2014 | 色中色入口 | 色网在线| kdbacc app网站 | 五月激情综合婷婷 | 老师好大乳好紧好深 | 天天插天天干 | 色视频网站在线观看 | 97人妻成人免费视频 | 国产精选 第1页-要看tv | 久热re在线视频精品免费 | 污污内射久久一区二区欧美日韩 | 欧美日韩另类在线专区 | 亚洲AV色综成人网77777 | 在线视频免费观看爽爽爽 | 日本免费一区二区视频 | 久久久精品久久久久三级 | 日本又色又爽又黄的A片小说 | 公交车艳妇系列1一40 | 久久亚洲精品AV成人无码 | 婷婷开心综合 | 国产成人久久777777 | 国内揄拍国内精品对白86 | 国精产品一二三区传媒公司 | 亚洲色欧美 | 午夜视频导航 | 久久这里只精品热在线99 | 国产aaaaa一级毛片无下载 | 91精品国产免费青青碰在线观看 | 亚洲自偷自拍另类图片小说 | 亚洲性受 | 国产婷婷亚洲999精品小说 | 亚洲日日操 | 国产精品高潮呻吟爱久久AV无码 | 亚洲精品久久无码AV片俺去也 | 天天天天天天操 | 青草娱乐极品免费视频 | 91精品欧美综合在线观看 | 日本韩国台湾香港三级 | 三贵情史| 无套内谢少妇毛片A片樱花 无套内谢孕妇毛片免费看 无修无遮h韩漫视频网站 | 日韩精品无码久久一区二区三 | 天天操夜夜欢 | 一二三四日本免费 | 校园又色又夹爽又黄的小说 | 先锋影音av资源站av | 久久AV亚洲精品一区无码网 | 麻豆专媒体一区二区 | 成人午夜A片产无码免费视频日本 | 日韩在线卡2卡3卡4卡5卡免费 | 亚洲欭美日韩颜射在线二 | sss色视频| 麻豆短视频传媒网站 | 97视频人人 | 国产电影一曲二曲三曲 | 色情成人吃奶激情视频在线播放 | 欧美大片日韩精品四虎影视 | 开心婷婷丁香 | 成熟妇人A片免费看网站 | 高清波多野结衣一区二区三区 | 免费一级毛片无毒不卡 | 无码人妻精品一区二区三区A片 | 泷泽萝拉快播地址 | 狠狠色噜噜狠狠狠狠狠色综合久久 | 久久88香港三级台湾三级中文 | 精品深夜AV无码一区二区老年 | 国产午夜影视大全免费观看 | 日本午夜福利无码高清 | 欧美变态暴力牲交VIDEOS | 国产精品久久国产三级国不卡顿 | 日本人强伦姧人妻A片 | 字幕中文字幕 | 亚洲另类激情专区小说 | 欧美激情视频在线观看一区二区三区 | 最近免费中文视频2018 | 亚洲熟妇无码乱子AV电影 | 日韩国产成人无码AV毛片蜜柚 | 午夜影视在线视频观看免费 | 又长又大又粗又硬3p免费视频 | 日本少妇裸体做爰高潮片 | 都市激情综合网 | A片太大太长太深好爽A片视频 | 亚洲欧美国产日本 | 一色屋免费精品视频 | 亚洲AV无码午夜国产精品色软件 | 亚精产品一三三菠萝蜜 | 久久综合久久综合久久 | 色插图午夜影院 | 国内一级一级毛片a免费 | 91精品国产色综合久久不 | 真人一级一级特黄高清毛片 | 亚洲视频五区 | 蜜臀在线观看免费网址 | 特级A欧美做爰AAAAA片 | 色综合网 | 国产资源一区 | 羞羞答答.NT视频在线观看 | 一级久久 | 午夜婷婷精品午夜无码A片影院 | 亚洲精品www久久久久久 | 快播色电影 | 久久精品视频在线看99 | 无码AV动漫精品一区二区免费 | 熟女人妻私密按摩内射 | 麻豆出品必是精品 | 翁熄性放纵交换39章小莹 | 麻豆精品一区二正一三区 | 亚洲欧美一区二区三区麻豆 | 五月欧美| 久草中文视频 | 成人黄网站A片免费观看 | 国产超高清麻豆精品传媒麻豆精品 | 中文字幕热久久久久久久 | 黄色专区 | 欧美精品毛片久久久久久久 | 亚洲精品午睡沙发系列 | 国产一级做a爰片久久毛片男 | 国内精品视频在线播放一区 | 男人午夜网站 | 插影院 | 中文字幕精品波多野结衣 | 青草国产 | 国产精品99久久久久久宅男 | 丁香婷婷小说 | 亚洲小说欧美另类激情 | 宝贝看我是怎么吃你水蜜桃的视频 | 无人区卡一卡二卡网站 | 国产极品久久 | 欧美精品一区二区三区四区 | 久久女人被添全过程A片 | 日产乱码卡一卡2卡三卡四麻豆 | jizz老师喷水 | 免费做A爰片久久毛片A片下载 | 午夜看片免费 | 日本 一二三 不卡 免费 | 色综合综合色 | 日韩在线精品视频 | 男人大JI巴做爰好爽视频 | 国产高潮呻吟无码精品AV | 久久亚洲精品国产精品黑人 | 国产熟妇久久精品亚洲熟女图片 | 国产成人亚洲精品77 | 亚洲欧美国产日本 | 国产色情久久久久久久久 | 玖玖色资源 | 伦理电影播放伦理电影 | 33连成人导航| 内射丰满高大五十五岁熟女 | 五月婷婷六月综合 | 国产人成精品综合欧美成人 | 福利91| 中文字幕精品久久久久人妻红杏1 | 成年18网站免费视频网站 | 波多野结衣亚洲一区二区三区 | 国产精品久久久久久免费 | 91香蕉在线观看 | 一级做a爰片性色毛片16美国 | 日本人妻仑乱少妇A级毛片潘金莲 | 护士97资源站共享总站 | 福利91 | 欧美1| 99视频全部看免费观 | 亚洲 欧美 丝袜 制服 在线 | 国产精品人妻无码久久久2022 | 免费高清在线爱做视频 | 日日摸夜夜摸狠狠摸97 | 日本中文字幕有码在线视频 | 成年香蕉大黄美女美女 | 斗破苍穹第5季全集免费观看 | 性一交一乱一美A片裸体 | 四虎影视免费大全 | 一级女性全黄久久生活片免费 | 国产电影无码午夜在线播放 | 婷婷五月久久丁香国产综合 | 久久天天婷婷五月俺也去 | 熟妇乱子作爱视频大陆 | 亚洲欧美另类图片 | 国产在线欧美精品中文一区 | 日本亚洲免费无线码 | 顶级少妇做爰视频在线观 | 亚洲国产精品日本无码小说 | 啊灬啊别停灬用力啊动态图 | 精品中文字幕一区在线 | 插骚妇好爽好骚 | 出差被公添到高潮A片视频 厨房少妇人妻好深太紧了 纯肉1女多n男全文阅读 | 丝袜在线视频 | 久久综合五月开心婷婷深深爱 | 成年人黄色在线观看 | 欧美极品jizzhd欧美4k | 国产乱视频在线观看 | 色99视频| 狠狠色噜噜狠狠狠狠2021天天 | 色视频在线观看完整免费版 | 午夜在线观看cao | 成人 婷婷| 色五五月五月开 | 精品久久久爽爽久久久AV | 国产又色又爽又黄又免费的小说 | 欧美精品无码一二三区网站 | 无翼乌之全彩爆乳口工不知火舞 | 亚洲第一中文 | 国产午夜婷婷精品无码A片 国产午夜视频在线观看 | 精品无码日本蜜桃麻豆走秀 | 色情无码WWW视频无码区下载 | 国产精品视频九九九 | 精品亚洲成A人20247在线观看 | 邪恶肉肉全彩色无遮盖无翼海贼王 | 久久综合老色鬼网站 | 国精品无码一区二区三区在线A片 | 少妇性BBB搡BBB爽爽爽小说 | 最大的高清色情在线网 | 国产又爽又大又黄A片图片 国产又爽又大又黄A片小说 | 久久ZYZ资源站无码中文动漫 | 国产区视频在线 | 国产人妻大保健私密推油按摩无码 | 久久精品久久精品久久 | 国产精品69人妻无码久久 | 国产SUV精品一区二AV18款 | 96在线看片免费视频国产 | 亚洲jav| 色在线免费观看 | 国产精品美女久久久网站动漫 | 大陆一级黄色片 | 最近中文字幕2019免费BD | 国产瑜伽白皙一区二区 | 一级一级一级毛片 | 在线88av| 欧美日日夜夜 | 亚洲AV电影天堂男人的天堂 | v片免费观看 | 巨大黑人极品videos中国 | 午夜高清| 玖操在线 | 99久久精品免费 | 国产亚洲午夜精品a一区二区 | 2022精品国产 | 亚洲第九十九页 | 色小说综合网 | 色中色影视 | 全黄a免费一级毛片人人爱 全古装一级毛片大全 | 久久成人麻豆午夜电影 | 色戒汤唯梁朝伟七分频视频 | 国产成人精品综合网站 | 撞击着旗袍美妇的肉臀 | 色情图插插插 | 最近最新2019中文在线观看 | 中文字幕天堂最新版在线网 | 欧美日韩一区二区三区四区在线观看 | 黄网在线视频 | 日本免费网址大全在线观看 | 国产一区二区精品久久小说 | 国产v片在线播放免费观 | 开心色播网 | 涩涩爱涩涩电影网站 | 国产69精品久久久久观看软件 | 亚洲日本黄色 | 午夜亚洲 | 欧美色偷偷亚洲天堂bt | 欧美猛交XXX无码黑寡妇 | 国产精品免费综合一区视频 | 国产精品国产三级国产专区不 | 日本丰满大乳人妻无码 | 爱色影音 | 国产精品国产三级国产an不卡 | 成人免费A片视频在线观看网站 | 高清欧美不卡一区二区三区 | a级毛片黄色 | 污污的小说网站免费阅读 | 二次元美女开腿污裸体 | 亚洲色噜噜狠狠站欲八 | 欧美一区二区三区精品 | 国产精品免费露脸视频 | 成人99国产精品一级毛片 | 色中色 亚洲 | 亚洲欧洲精品A片久久99 | 日本高清免费一本在线观看 | 免费观看又色又爽又黄的校园 | 2018精品国产一区二区 |