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

foco

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

ppvtkfso

10 Oct 2025(atualizado 10/10/2025 às 01h10)

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

Temas

Compartilhe

One Battle After Another to Spinal Tap II 14 of the best films to watch this September.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 jogo de cozinhar tudo que quiserits 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

'It's a reference whenever you want to build tension' How Psycho's terrifying music changed film forever.txt

Outsourcing_-_BBC_News.txt enciclopédia e os entretenimento entretenimento.

GRáFICOS

nos eixos

10_Modern_Mechanical_Turks_When_Automation_Is_Just_Humans_in_Disguise.txt

Parts_supplied_to_Boeing_had_serious_defects_-_whistleblower.txt enciclopédia e os ponto quente foco.

Navegue por temas

Pakistan_-_BBC_News.txt PDMU_-_BBC_Bitesize.txt Oasis_archive_shows_Gallaghers_at_mums_house_before_Maine_Road.txt Oasis_archive_Fans_react_to_rumours_of_a_split_in_1996.txt One_Battle_After_Another_to_Spinal_Tap_II_14_of_the_best_films_to_watch_this_September.txt Online_festival_celebrates_arts_affected_by_Covid-19.txt Notorious_Angola_prison_to_be_used_in_Trumps_immigration_crackdown.txt People_past_events_and_societies_-_BBC_Bitesize.txt Objections_made_to_Omaze_plans_for_6m_Norfolk_home.txt Parents_say_daughter_15_let_down_by_NHS_after_meningitis_death.txt
国产欧美va欧美va香蕉在线 | 高清色视频 | 國產日韓亞洲精品AV | 韩国精品一区二区三区在线观看 | 亚洲欧美色综合影院 | 成熟人妻AV无码专区A片 | 男人的天堂亚洲一线AV在线观看 | 美女伊人| 国产妇女性爽视频免费 | 四虎永久在线精品免费A | 婷婷国产成人精品视频小说 | 国产黄大片在线观看 | 97精品国产福利一区二区三区 | 善良的小峓子在线高清免费观看完整中文版 | 成年人免费黄色片 | 小小视频资源免费观看高清 | 性欧美v | 老司机精品视频午夜免费视频 | 人人影视大全 | 久久久高清国产999尤物 | 免费三级网站 | 撞击着旗袍美妇的肉臀 | 成人无码区免费A片视频韩国 | 久久黄色网 | 黄页视频在线观看 | 天天撸日日夜夜 | 欧美日韩日本国产 | 久久久综合网 | 中文字幕久久久久一区 | 艳情小区少妇教师小说 | 免费看成人播放毛片 | 欧美人妖 | 欧美激情A片一区二三区 | 免费国产黄网站在线观看可以下载 | 亚洲 欧美 变态 卡通 自拍 | 亚洲乱码日产精品M | 国产一区二区三区精品AV | 日美韩大片高清免费观看 | 日韩精品免费一线在线观看 | 国产亚洲精品97在线视频一 | 成人无码在线视频区 | 人妻少妇系列在线观看 | 人妻妺妺窝人体色WWW聚色窝 | 色涩网站在线观看 | 五月婷婷爱 | 青草国内精品视频在线观看 | 欧美手机手机在线视频一区 | 色综合自拍 | 老司机亚洲精品影院 | 在线v片免费观看视频 | 成都影院免费高清完整 | 美国人成毛片在线播放 | 黄色网页观看 | 永久无码日韩A片免费看麻豆精品 | 久久综合九色综合97 | 亚洲国产精品嫩草影院永久 | 精品欧美中国福利第一导航 | 欧美制服丝袜在线 | 久久国产精品99国产精 | 老司机色 | 雨天车站H肉动漫在线观看 玉女jy荡小说 | 国产黄色在线看 | 狠狠l撸| 精品一卡2卡三卡4卡乱码理论 | 国产好大好爽久久久久久久 | 制服丝袜在线一区 | 欧美一区二区三区久久综合 | 婷婷五月俺去也人妻 | 日韩精品AV一二三区在线 | 九九九视频 | 天天干天天爽天天操 | 一个人看的www在线看视频 | 日本一二三不卡视频 | 精品国产乱码久久久久久口爆 | 国产爽的冒白浆的视频 | 午夜福利18禁视频 | 久久婷婷无码欧美日韩 | 手机播放一卡二卡三在线观看 | 亚洲一区二区在线播放 | 一区二区三区国产亚洲网站 | 久久亚洲欧美 | 超碰在线路98 | 免费观看又色又爽又黄的软件 | 欧美午夜乱理片无码视频 | 亚洲AV无码午夜国产精品色软件 | 亚洲日本欧美日韩中文字幕 | 经典乱家庭伦小说 | 亚洲精品久久午夜麻豆 | 国产成人精品午夜福利在线播放 | 中文字幕日韩女同互慰视频 | 国产亚洲女人久久久久久 | 国产人成| brazzers欧美孕交 | 久久人人 人人澡 人人澡 | 美女扒开腿让男人桶爽30分钟 | 大伊香蕉在线观看视频 | 免费阿v网站在线观看g | 高清久久 | 海角国精产品一区一区三区糖心 | 777精品久无码人妻蜜桃 | 中文字幕亚洲综久久2021 | 日本人丰满xxxxhd | 国产乱码日产精品BD | 欧美色欧美亚洲高清在线观看 | 神兵小将第一季免费观看 | 天堂资源在线最新版 | 亚瑟在线视频免费视频观看 | 一区二区免费看 | 色婷婷综合激情中文在线 | 亚洲A片无码成人精品区 | 五月综合色婷婷影院在线观看 | 国产亚洲精品成人久久网站 | 超清中文乱码字幕在线观看 | 欧美性野久久久久久久久 | 亚洲AV无码无限在线观看不卡 | 成人亚洲国产精品久久 | 中文字幕第一区 | 欧美老妇毛茸茸二毛 | 每章都有肉并且非常黄的小说 | 亚洲m男在线中文字幕 | 天天曰天天干 | 中文字幕无线观看在 | 色老头色老太aaabbb | 91短视频版在线观看www免费 | 被工地工人轮着上雯雯 | 真人一进一出抽搐无遮挡 | 激情五月婷婷 | 久热99这里只有精品视频6 | 久久精品国产三级不卡 | 国产精品一区二区三区四区五区 | 黑人巨茎大战俄罗斯美女 | 制服a片 | 国产美女一级视频 | 99re这里| 四虎2024最新免费观看 | 日韩精品亚洲专在线电影 | 特级毛片内射WWW无码 | 日本一区色情无码视频在线观看 | 成人亚洲A片V二区三区久久 | 一级在线视频 | www.男同| 中文字幕资源在线 | 三要四妾国语免费观看 | 成人乱码一区二区三区AV66 | 亚洲欧美中文日韩v在线 | 黑人特黄AA完整性大片 | 国内精品不卡一区二区三区 | 国产精品视频白浆合集 | 国产欧美另类久久久精品 | 国产精品视频一区二区猎奇 | 东流影院百度影音 | 亚洲阿v天堂无码在线 | 日本成人在线看 | 日本一区二区三区欧美在线观看 | 99精品国产免费观看视频 | 特级做A爰片毛片免费看108 | 最新色站 | 国产乱对白精彩 | 18成网站www在线观看 | 五月天国产精品 | 九九热久久只有精品2 | 日韩一区精品 | 亚洲麻豆一区 | 青青草A在在观免费线观看 青青草成人费观看 | 国产做A爱片久久毛片A片小说 | 欧美性色欧美性A片色欲 | 神马影院午夜理论二 | 熟女泄火一区二区三区在线 | 欧美日韩国产另类一区二区三区 | 免费h片 | 不得不看的极品av作品 | 久久伊人中文字幕麻豆 | 播播网手机在线播放 | 国产午夜福利视频第三区 | 亚洲国产三级在线观看 | 中文字幕动漫精品专区 | 免费毛片试看 | 青草韩国 | 五月香六月婷婷激情综合 | 婷婷五月开心五月色情 | 偷拍亚洲网友图片区 | 免费的精品一区二区三区A片 | 韩国伦理电影在线看线 | 欧美一级美片在线观看免费 | 先锋影音av资源站av | 日韩精品欧美一区二区三区 | 夜色撩人在线视频 | 朝鲜美女免费一级毛片 | 专干老熟女A片 | 欧美色五月 | 亚洲人成小说色在线 | 久久久爱毛片一区二区三区 | 免费看成人A片无码视频网站 | 男女做爰猛烈动高潮A片色情 | 国产精品成人A片在线果冻 国产精品大尺度尺度视频 国产精品对白交换视频 | 中文字幕不卡一区 | 偷看洗澡好多毛 | 一级特黄国产高清毛片97看片 | 久久福利资源网站免费看 | 精品人妻无码一区二区三区蜜桃臀 | 丁香婷婷激情综合 | 三A级做爰片免费观看春光乍泄 | 精品人妻无码日本一区二区三区 | 黑人粗长大战亚洲女 | sss欧美一区二区三区 | 国产三级日本三级在线播放 | 亚洲三级高清免费 | 久久久无码精品亚洲日韩啪啪网站 | 秋霞一级| 嗯好舒服嗯好猛嗯好大不要 | 国产精品美女久久久网站动漫 | 婷婷精品国产亚洲AV在线观看 | 三级黄色网址 | 亚洲伦理在线 | 国产成人福利在线 | 18视频在线观看网站 | ww久久| 国产激情艳情在线看视频 | 拔插拔插视频在线观看 | 大陆老熟女嗷嗷叫AV在线 | 黄+在线播放 | 欧美三级黄色大片 | 久久夜色精品国产飘飘 | 亚洲国产成人精品激情 | 久久艳妇乳肉豪妇荡乳A片PY | 91观看| 亚洲天堂视频在线免费观看 | 成人精品人成网站 | 黄色网址视频免费 | 欧美激情综合 | 无码人妻国产精品久久 | 搞黄网站免费看 | 国产精品第一国产综合精品99 | 久久9精品区-无套内射无码 | 亚洲 欧美 影音先锋 | 色情无码WWW视频无码小说 | 在办公室里揉护士的胸 | 波多野结衣免费观看视频 | 久久免费视屏 | 成熟少妇大片免费看 | 黄色三级网 | 色网址在线 | 少妇性L交大片免 | 亚洲黄色片一级 | 久久伊人影院 | 亚洲综合激情小说 | 国产丝袜护土调教在线视频 | 亚洲AV国产精品无码精 | 天天做天天爱天天爽综合网 | A片好大好紧好爽视频 | 在线毛片观看 | 亚洲啪 | 亚精产品一三三菠萝蜜 | 男女爽爽午夜18污污影院 | 91粉色视频在线导航 | blacked欧美黑粗硬大free beeg -日本 beeg.黑人 | 美国一级大黄香蕉片 | 护士一级毛片 | 影音先锋资av男人撸 | 欧美成人丝袜一区二区 | 亚洲最新永久在线观看 | 中文字幕奈奈美被公侵犯 | 欧美成人精品一区二区免费 | 99在线观看视频免费 | 久久久无码精品亚洲日韩啪啪网站 | 秋霞电影网院午夜伦不卡A片 | 嗯男人r啊唔h哈 | 里番a c g全彩| 久久天天丁香婷婷中文字幕 | www.片| 中文字幕 无码亚洲 | 免费观看黄色片 | 国产午睡沙发客厅25分钟 | 亚洲伊人色综合久久天天伊人 | 一个人看www免费高清 | 99精品无人区乱码在线观看 | 亚洲免费资源 | 中国字幕免费观看 | 曰b免费视频 | WWW色情成人免费视频 | 日日鲁鲁鲁夜夜爽爽狠狠视频97 | 欧美国产日本精品一区二区三区 | 日韩日韩精品无砖专区2020 | 95国产精品人妻无码久 | jizzjizzjizzjizz日本 | 日本少妇按摩做爰2 | 亚洲精品蜜桃久久久久久 | 日本免费一本天堂在线 | 国产一区免费在线观看 | 激情综合网婷婷 | 中文字幕在线观看91 | 亚洲干b | 少妇被躁爽到高潮无码A片小说 | 欧美精品一区二区少妇免费A片 | 91制片厂制作果冻传媒所有 | 国产国产人精品视频69 | 亚洲首页国产精品丝袜 | 中文字幕一区二区三区在线不卡 | 麻豆成人AV久久无码精品 | 欧美一级欧美一级在线播放 | 看看色播| 久久永久免费 | 中文字幕天堂网 | 国产香港特级一级毛片 | 翁公与小莹在客厅激情 | 97青草最新免费精品视频 | 天堂网资源在线 | 无码国产一区二区三区四区 | 精品一卡2卡三卡4卡三卡免费 | 少妇2做爰A片 | 日韩视频免费 | 成人免费看WWW网址入口 | 国产福利视频在线观看福利 | 日韩精美视频 | 2021韩国理论片在线观看私人影院 | 菠萝蜜BLM新区口 | 日韩成人A片一区二区三区 日韩艹 | 91天堂最新在线观看 | 亚洲乱码卡3卡4卡新区 | 精品亚洲永久免费精品 | 91蜜桃麻豆| 久久久久久久尹人综合网亚洲 | 最近韩国日本免费观看高清 | 色天天综合色天天害人害己 | 爱你几何在线观看 | 国产亚洲精品久久久久苍井松 | 欧美群交在线播放1 | 国产一区二区不卡老阿姨 | 少妇寂寞偷公乱400章深夜书屋 | 国产精品高潮呻吟AV久久小说 | 少妇做爰免费视看片 | 九九天天影视 | 99久久www免费人成精品 | 久久久久久久久性潮 | 小视频黄站网黄 | 秋霞日韩一区二区三区在线观看 | 日韩精品视频在线免费观看 | 国产偷抇久久精品A片69 | 操亚洲 | 精品自拍视频在线观看 | 亚洲国产精华液网站W | 久久久国产精品免费A片3D | 国产在线视视频有精品 | 伊人久久五月丁婷婷 | 久久精品国产400部免费看 | 日本免费在线一区 | 天天干天天舔天天操 | 亚洲人成日本在线观看 | 四虎影视免费在线 | 和少妇邻居做爰伦理 | 亚洲色图激情小说 | 翁公又大又粗挺进了我 | 天天操天天舔天天射 | 四虎在线视频免费观看视频 | 黄页在线观看免费 | 国产精品系列在线一区 | 久久视频在线视频观看2019 | 中文字幕动漫精品专区 | 日韩福利视频一区 | 一个人观看的免费视频 | 六月婷婷国产精品综合 | 亚洲精品久久久午夜麻豆 | 久久久精| 精品国产一区二区三区四区阿崩 | 地狱天堂2019完整版免费观看 | 欧美日韩视频一区二区在线观看 | 日本大胆无码免费视频 | 天天综合视频网 | 三级免费黄色片 | 婷婷综合 在线 | 久久免费看少妇高潮A片JA小说 | 四虎8848永久在线 | 免费的成人性视频网站 | 日本大片免费视频在线 | 亚洲卡一卡二卡三乱码公司 | 欧美成人天天综合在线视色 | 亚洲丰满熟女一区二区蜜桃 | 国产成人无码AA片免费看 | 成人导航网 | 国产成人综合精品 | a级伦理片 | 波多野结衣亚洲一区二区三区 | 五月情天 | 国产亚洲精品久久综合阿香蕉 | 欧美性A片又大又长 | 婷婷四月开心色房播播 | 男男双性高H浪荡小说合集 男男体育生乱yin高H肉汁 | 91情国产l精品国产亚洲区 | 亚洲三级在线 | R男女牲交45分钟A片 | 久久久久久久久免费影院 | 国产成人免费视频 | 欧美三级在线完整版免费 | 99在线视频免费观看视频 | 日本三日本三级香港三级 | 男女啪啪抽搐高潮动态图 | 日韩中文字幕视频 | 黄sei大片全集 | 黄色一级片在线免费观看 | 手机在线毛片免费播放 | 宅男在线永久免费观看 | 97国产揄拍国产精品人妻 | 国产一及毛片 | 超清中文乱码字幕在线观看 | 久久久久一 | 亚洲老熟女AV一区二区在线播放 | 邓丽欣6分钟种子 | 乱护士肉合集乱500篇 | 成人国产色情无码永久免费软件 | 国产精品a无线 | 日本成人性视频 | 中文字幕日本在线观看 | 色吧新地址 | 最好看的最新的中文字幕1 最好看的最新的中文字幕3 | 嫩草影院一二三区入口首页 | 久久88| 亚洲AV无码成人一区二区三区 | 亚洲成av人片在线观看 | 亚洲成_人网站图片 | 在线黄色.com | 黄色链接在线观看 | 国产人妻精品久久久久久很牛 | 91亚洲自偷手机在线观看 | 中文字幕无码A片久久 | 插骚妇好爽好骚 | 午夜精品视频在线看 | 国产精品扒开做爽爽爽的视频 | 中文字幕欧美一区 | 91亚洲欧美 | 人妖另类亚洲xxxx | 国产午夜精品美女视频露脸 | 天天爽夜爽免费精品视频 | 久久99精品一级毛片 | 在线免费色视频 | 天天透天天插 | 局内人2在线观看 | 国产永久一区二区三区 | 天美在线| 大陆一级毛片免费视频观看i | 成人免费20242024被爆出 | J8又粗又硬又大又爽又网站 | 最近的中文字幕免费完整版 | 伊人玖玖| 狠狠干综合网 | 日本三级一区 | 欧美日韩一本 | 囯产精品一区二区三区线 | 香蕉九九 | 日本一道本 | 成人无码精品1区2区3区免费看 | 五月深爱网 | 国产成人精品午夜免费 | 色爱区综合激情五月综合激情 | 韩国精品欧美一区二区三区 | 伊人狠狠丁香婷婷综合尤物 | 天堂tv亚洲tv日本tv欧洲 | 国产乱码在线观看 | 黄色成人毛片 | 女闺蜜扒开腿让我CAO她 | 亚洲一区二区三区国产精华液 | 日产精品卡二卡三卡四卡乱码视频 | 国产 欧美 日本 | 亚洲手机中文字幕 | 亚洲首页国产精品丝袜 | 狠狠色狠狠色综合日日92 | 成年人网站在线观看免费 | 奇米四色奇米四色444影视盒 | 中文人妻AV久久人妻水蜜桃 | 护士97资源站共享总站 | 久久久最新精品 | 欧美日韩高清不卡免费观看 | 伦理片无码电影在线看 | 国产亚洲国际精品福利 | 日本三级黄色片网站 | 手机在线看片国产 | 无码乱人伦一区二区亚洲 | 欧美精品第欧美第12页 | 国产又黄又湿又刺激不卡网站 | 欧美freesex黑人又粗又大 | 亚洲乱码日产精品M | 真实国产乱子伦对白视频37P | 好爽快点我受不了了国产 | 青娱乐啪啪 | 五月婷婷六月丁香综合 | 影音先锋最新av资源库 | 男男腐文污高干嗯啊快点1V1 | 国产成人精品一区二区三区视频 | 亚洲AV久久无码精品蜜桃 | 工口里番全彩无肉码3D啪啪 | 狠狠色丁香婷综合久久 | 欧美日本一区二区三区生 | 亚洲AV无码精品蜜桃 | 免费精品一区二区三区A片在线 | 国产精品久久久久久亚洲毛片 | 色情毛片AAAAAA片| 欧美又粗又猛又爽又黄A片 欧美又大又粗毛片多喷水 欧美又大又粗又湿A片 | 最新亚洲精品国自产在线 | 免费网站在线观看人数在哪里看的 | 免费无码一线A片AAA片 | 中文字幕日本一区 | 国产日产欧产美韩系列影片 | 91po国产在线高清福利 | 国产人妻大保健私密推油按摩无码 | 操老女人逼 | 免费黄色小网站 | 免费视频网站在线观看黄 | 777午夜精品久久AV蜜桃小说 | 久久一级黄色片 | 中文字幕乱码免费 | 日本高清色视频www 日本高清色片 | 久亚洲AV无码专区A片 | 日日夜夜精品免费视频 | 最近更新2019中文字幕免费 | 天堂新版在线资源 | 无码免费人妻A片AAA毛片一区 | 亚洲欧美一区二区三区麻豆 | 图片区 日韩 欧美 亚洲 | 精品人妻伦一二三区久久AAA片 | 日韩精品亚洲专区在线影院 | 午夜成年奭片免费观看 | 欧美精品一区二区少妇免费A片 | 久久爱色欲AV | 精品三级66在线播放 | 一级片在线免费 | 男人天堂网夜色99视频 | 亚洲色拍偷拍精品一区二区麻豆 | 国产精品涩涩涩视频网站 | 四虎影库884aa.cow| 欧美激情视频一区二区三区 | 九九久久看少妇高潮A片特黄 | 中文字幕乱倫视频 | 老司机无码精品A | 97久久国产露脸精品国产 | 国产最新一区二区三区天堂 | 美女黄网站永久免费观看网站 | 日本久久高清一区二区三区毛片 | 国产区福利 | 日本无码熟妇人妻在线视频免费看 | 中文字幕亚洲激情 | 色吧中文网 | 99精品免费 | WW.2024色情网图片 | 亚洲伊人色综合网色欲WWW | 无码AV免费精品一区二区三区 | 免费大片av网站 | 真人一级毛片国产 | 清纯校花挨脔日常H惩罚视频 | 国产又黄又硬又湿又黄的A片小说 | 日韩国产毛片 | 天天天 | 5a级毛片 | 男人把我添到了高潮A片 | 黄色在线免费播放 | 国产欧洲一卡2卡3卡4卡 | 最近中文字幕完整视频下载 | 你懂的日韩| 96精品国产高清在线看入口 | 曰本熟妇乱妇色A片在线 | 久视频在线观看久视频 | 熟女毛毛多熟妇人妻AV | 久久久国产精品免费A片3D | 软玉娇香多肉1V3 | 2024最新国产不卡a国内2024 | 巜疯狂的少妇4做爰BD播放 | 亚洲一区二区三区91 | 中国护士一级毛片免费版本 | 黄色在线视频网址 | 日韩免费视频播放 | 九九精品成人免费国产片 | 五月婷婷之综合激情 | 97久久精品国产成人影院 | 日本亚洲综合 | 伊人热久久 | 波多野结衣在线视频观看 | 高清国产天堂在线BT免费 | 韩国日本香港三级 | 一女多男nP现代高H 一区二区三区好的精华液杨朝越 | 国产精品一区二区三区四区五区 | 欧美极品欧美精品欧美视频 | 欧美一级视频精品观看 | 粗大挺进尤物人妻中文字幕 | 亚洲AV在线无码播放毛片浪潮 | 国产成+人欧美+综合在线观看 | 日本三线免费视频观看 | 蜜臀国产一区二区三区无码A片 | 性一交一乱一伦一色一情孩交 | 亚洲天堂999| 久久久久久国产视频 | 婷婷激情综合网 | 精品国偷拍自产在线观看 | 少妇做爰又色又紧夜视频 | 亚洲一区二区三区在线播放 | 黑人巨茎大战俄罗斯美女 | 国产三级日产三级日本三级 | 男人午夜视频在线观看 | 欧美日韩精品一区二区三区视频 | 2021手机日本卡一卡二新区 | 成人网页 | 亚洲精品无码高潮喷水A片软件 | 久久这里只有精品无码3D | 日本免费专区在线观看中破初 | 成人性生交A片免费看麻豆 成人性生交大片免费看中国A片 | 黄www.| 巨污全肉np一女多男 | 婷婷婷色| 精品久久久久久久高清 | 精品国产乱码久久久久久夜深人妻 | 在线看黄色网址 | 日本视频一区在线观看免费 | 国产精品99精品久久免费 | 日本免费在线 | jizzjizz国产 | 亚洲一级视频在线观看 | 丰满多毛少妇做爰视频爽爽和R | 亚洲伊人色综合网站 | 美妇在家被强干小说 | 日韩精品一区二区三区色欲AV | 国产成人精品亚洲精品一区色欲 | 丰满人妻熟妇乱又伦精品劲 | 免费观看欧美一级牲片一 | 欧美日韩一二三区 | 狠狠五月婷婷 | 亚洲AV久久综合无码东京 | 九九九九在线视频播放 | 亚洲 另类 春色 小说 | 欧美激情综合色综合啪啪五月 | 热门视频 | 日韩在线一 | 欧美日本国产VA高清CABAL | 91精品婷婷国产综合久久8 | 欧美极品第一页 | 色综合五月激情综合色一区 | 日本人妻仑乱少妇A级毛片一 | 91精品全国免费观看青青 | 四虎无码永久在线影库网址一个人 | 在线观看的黄色网址 | 人禽无码做爰在线观看视频 | 强姧美女动态图片 | 粉嫩被粗大进进出出视频 | 久久宗合色| 天天做天天爱天天综合网 | 日韩视频在线播放 | 岛国在线无码高清视频 | 午夜成年人网站 | 亚洲欧洲自拍拍偷 | 久久综合一区二区三区 | 伦理片 a在线线版韩国 | 色欲AV亚洲午夜精品无码电影 | 波多野结衣免费视频观看 | 欲色AV无码一区二区人妻 | 色播日韩 | 国产人碰人摸人爱免费视频 | 日本最大色倩网站www | 最新版天堂资源中文官网 | 18禁无遮挡羞羞污污污污网站 | 91久久综合精品国产丝袜长腿 | 日韩欧美不卡一区二区三区 | 苍井空亚洲精品AA片在线播放 | 久久国产人妻一区二区免费 | 在线不卡日本v二区到六区 在线岛国片免费观看无码 在线高清无码欧美久章草 在线观看 有码 制服 中文 | 国色天香AV在线观看免费 | 欧美大交乱xxxxxbbb | 日本一卡二卡三卡四卡无卡免 | 中文天堂| 最新日韩精品 | 邪恶肉肉全彩色无遮盖 | 国产一区日韩二区欧美三区 | 欧美亚洲h在线一区二区 | 欧美性猛交一区二区三区精品 | 色综合色综合色综合网址 | 日韩精品一区二区三区色欲AV | 日本精品视频在线 | 国产黄网永久免费 | 国产清纯91天堂在线观看 | 国产精品久久久久久久久免费hd | 国产又黄又大又色爽的A片小说 | 婷婷熟女在线视频 | 欧美一级手机免费观看片 | 午夜你懂的 | 91免费国产精品 | 熟女人妻一区二区三区免费看 | 中文字幕一区二区三区在线不卡 | 99国产精品综合AV无码 | 成人精品一区日本无码网 | 中文伊人| 欧美性猛交一区二区三区精品 | 色网在线视频 | 翁公的粗大挺进我的密道 | 激情五月婷婷综合 | 2020亚洲 欧美 国产 日韩 | 在线看午夜福利片 | 伊人网欧美 | 国产成人综合久久 | 小明精品国产一区二区三区 | 色婷婷国产精品视频一区二区三区 | 欧美三页 | 日本一卡二卡三卡四卡无卡免费播放 | 老师你下面太紧进不去小黄文 | 国产黄色片在线看 | a色毛片免费视频 | 久九九精品免费视频 | 日本高清免费不卡在线播放 | 婷婷综合亚洲爱久久 | 精品午夜寂寞黄网站在线 | 欧美亚洲另类热图 | 国产女人第一次做爰视频 | 亚洲精品国产乱码AV在线观看 | 日韩福利片午夜在线观看资源 | 国产自产v一区二区三区c | 日本亚洲欧洲另类图片 | 中文网丁香综合网 | 拍戏被CAO翻了H | 日韓無碼人妻不倫A片 | 最近中文国语字幕在线播放视频 | 国产精品毛片在线更新 | 色综合久久久高清综合久久久 | 99国产在线视频有精品视频 | 亚洲精品蜜桃久久久久久 | 8000av在线 | 色哟哟在线观看免费网址 | jizz亚洲视频| 一区二区三区成人A片在线观看 | 成人无码区免费A片视频韩国 | 韩日午夜在线资源一区二区 | 久9视频这里只有精品试看 久草app黄 | 色女人综合| 狠狠色丁香婷婷综合久久来 | 色毛片免费观看 | 无码人妻丰满熟妇啪啪区日韩久久 | 黄色 在线 | 午夜性色吃奶添下面69影院 | 欧美精品无码一二三区网站 | 在线观看免费a∨网站 | 在线观看中文字幕 | 秋霞伦理电影在线看 | 天天躁夜夜 | 午夜人妻一区二区三区熟女 | 国色天香视频社区手机版 | 婷婷97狠狠的狠狠的爱 | 成人综合网站 | 亚洲va高清中文字幕 | 欧美三级视频在线观看 | 国产无遮挡A片又黄又爽 | 国产69久久精品成人看 | 亚洲 日韩 色 图网站 | 最近中文国语字幕在线播放视频 | 伊思人在线 | 特黄A又粗又大黄又爽A片 | 国产精品久久久久久久久齐齐 | A片免费观看一区二区三区 A片粗大的内捧猛烈进出在线 | 2021自拍偷在线精品自拍偷 | 我爱灰太狼全集 | 国产亚洲精品AV麻豆狂野 | 人人看人人澡 | 酒色电影网 | 色偷偷亚洲第一成人综合网址 | 欧美手机手机在线视频一区 | 久草在在线免在线观看视频 | 又黄又爽吃奶视频在线观看 | 一个人看的视频WWW高清免费 | 无码专区aaaaaa免费视频 | 午夜亚洲福利在线老司机 | 亚洲国产精品久久久久秋霞影院 | AV无码国产精品午夜A片 | 日韩精品无码视频一区二区蜜桃 | www.av视频在线 | 欧美性v| 欧美性生交大片免费看A片免费 | 色偷偷亚洲女人天堂观看欧 | 国产免费A片好硬好爽好深小说 | 一抽一出BGM试看60分 | 国产精自产拍久久久久久蜜 | 免费大片黄国产在线观看 | 久久这里只精品热在线99 | 真人做爰片免费观看播放 | 欧美人与zozoxxxx另类 | 久国产视频 | 日本久久精品毛片一区随边看 | 成 人 网络 | 免费看男人J放进女人J无遮掩 | 欧美影片一区二区三区 | 欧美日韩一卡2卡三卡4卡新区 | 97色情在线观看免费高清 | GAY亚洲男男GV在线观看网站 | 最近中文字幕高清中文字幕无 | 日韩大片在线永久免费观看网站 | 国产大片一区 | 久热精品视频在线播放 | 黄色片在线观看网站 | 色就色 综合偷拍区欧美 | 日本激情网址 | 久久人人澡人人爽人人爱 | 成人男女网18免费app | 国产精品主播在线高清不卡 | 亚洲精品偷拍的自拍的 | 婷停五月深爱五月 | 99热最新在线观看 | 奇米四色在线视频 | 东京热无码中文字幕av专区 |