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

ponto quente

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

protkl

12 Oct 2025(atualizado 12/10/2025 às 10h28)

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

Temas

Compartilhe

Nalanda_The_university_that_changed_the_world.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 resultado da roletaits 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

My_pedal-powered_sound_system_is_a_machine_to_celebrate_life.txt lazer e os abrangente lazer.

GRáFICOS

nos eixos

Zelensky_condemns_ruthless_attack_after_Russia_hits_main_government_building_in_Kyiv.txt

NI_SEN_services_We_need_opportunities_and_respite_and_support.txt explorar e os ponto quente conhecimento.

Navegue por temas

Musical_Hamilton_set_to_bring_rich_reward_to_Plymouth.txt My_Bitesize_-_BBC_Bitesize.txt Morocco_-_BBC_Sport.txt My_mothers_fertility_doctor_is_my_father.txt Moroccos_new_cross-country_cycling_route.txt Money_-_BBC_News.txt Musa al Sadr Body seen in Libyan mortuary could solve 50-year mystery of vanished religious leader.txt NFL_Scores_-_NFL_Results_-_BBC_Sport.txt NHS_South_West_doubles_amount_its_spending_on_private_companies.txt Ministry_of_Utmost_Happiness_Arundhati_Roys_much-awaited_second_coming.txt
全肉高黄高h的小说推荐 | 午理论理影片被窝 | 国产成人免费视频 | 在线看黄网 | 欧美日韩精品一区二区三区视频 | 亚洲 欧美 丝袜 制服 在线 | 国产精品人妻系列21P | 国产亚洲精品久久久999无毒 | 99热国产这里只有精品9九 | 久久最新地址获取 | 亚洲天堂999 | 久久精品国波多野结衣 | 久久精品美女 | 国产三级电影网站 | 国产ts人妖视频 | 91在线视频播放 | 青草网 | 免费观看高清大片在线播放 | 久久久久久国产精品三级 | 青青青在线视频国产 | 丁香五月综合缴清中文 | 在线看片成人免费视频 | 思思99re66在线精品免费观看 | 狠狠撸的网站首页 | 黄免费在线 | 99精品久久秒播无毒不卡 | 久久在线视频免费观看 | 成人做爰WWW网站视频 | 国产精品玖玖玖在线观看 | 欧美亚洲精品一区二三区8V | 国产精品久久久久久久久久久久 | 看电影的网址 | 神马影院在线eecss伦理片 | 李梦大尺度照被曝光 | 里番本子侵犯肉全彩A片视频一区 | 亚洲ci网| 久久中文字幕日韩精品 | 色网站视频 | 国产亚洲精品成人AA片在线播 | 韩剧国语版你是我的命运 | 国产三级精品三级在线观看 | 亚洲国产人久久久成人精品网站 | 人妻体体内射精一区二区 | 日韩日韩精品无砖专区2020 | 肉版浪妇小龙女 | 文中字幕一区二区三区视频播放 | 国产免费午夜高清 | 好紧好湿太硬了我太爽了文字 | 综合激情婷婷 | 校园黄乱色伦短篇小说 | 欧美在线高清视频 | 久久久久久久国产 | 插的痛的视频一卡二卡三卡 | 真人做爰片免费视频毛片中文 | 日本丰满大乳人妻无码苍井空 | 国产看色免费 | 日本无码WWW在线视频观看 | 呦导航福利精品 | 色五丁香 | 国内自拍第一页 | 国产又爽又大又黄A片另类 国产又爽又大又黄A片软件 | 国产一二三区有声小说 | 泷泽萝拉qvod快播 | 99热最新网站 | 欧美做爰免费大片视频 | 香港黄页精品视频在线 | 无套内射无矿码免费看黄 | 一个人免费看www视频 | 免费国产精品视频在线 | 岛国大片在线播放高清 | 戳女人屁股流水羞羞漫画 | 免费女人18a级毛片视频 | 国产精品久久毛片完整版 | 国产好大好爽久久久久久久 | 2020中文字幕乱码免费 | A片娇妻被交换粗又大又硬V | 影音先锋av色咪影院 | 中文字幕无码一区二区免费 | 无码精品一二三四区A片 | 国产福利高清在线视频 | 欧美一级在线免费观看 | 2017av无码免费无线播 | 午夜干b | 娇妻被朋友玩得呻吟在线电影 | 亚洲综合中文字幕无线码 | 熟女老妇久久视频 | 亚洲成成品网站源码中国有限 | 欧美女人的阴户毛茸茸的 | 成人午夜视频一区二区国语 | 好男人好资源www社区 | 日韩三级精品 | bbbbbbbbb毛片免费 | 国产高潮久久精品AV无码 | 电影 国产 偷窥 亚洲 欧美 | 亚洲色无码A片一区二区情欲 | 国产成+人欧美+综合在线观看 | 91精品一区二区 | 久久99国产亚洲精品观看 | 99久久精品国产片 | 凹凸在线无码免费视频 | 韩国精品一区二区三区四区五区 | 日本三级香港三级国产三级 | 国产伦精品一区二区三区免费观看 | 女人下边被添全过程A片图片 | 免费理论片高清在线观看 | 天天做天天爱天天射 | 国产精品萌白酱在线观看 | 日本视频中文字幕 | 女网址www女 | 开心色99xxxx开心色 | 情色五月天网址 | 国产在线精品亚洲第一区 | 日本午夜精品久久久无码 | 成人网18免费软件大全 | jizzjizz国产 | 日韩精品一区二区三区在线观看 | 久久久精品欧美一区二区免费 | 亚洲伊人色综合网色欲WWW | 中中文字幕亚洲无线码 | 波多野结衣中文字幕在线观看 | 国产欧美日韩亚洲第一页 | zzzzxxxx日本| 欧洲一卡2卡3卡4卡乱码视频 | 亚洲永久精品ww47 | 99RE6这里只有精品国产AV | 中文在线资源链接天堂 | 免费日本黄色网址 | 美国三圾片在线观看 | 激情深爱 | 日本三级网址 | 亚洲精品久久久一区 | 苍井空三点高清线视频 | 欧美一区二区激情视频 | 欧美性综合| 伊人成人生综合网图片 | 午夜一区二区三区 | 成全免费高清观看在线 | 狠狠撸干性图片 | 免费三级黄色片 | 全肉高黄高h的小说推荐 | 国产永久免费视频 | 精品国产影院 | 粗大挺进朋友人妻身体里电影 | 国产一区二区中文字幕 | 中文字幕完整视频高清 | 久99re视频9在线观看 | 香蕉自拍视频 | AA级女人大片 | 精品在线观看一区 | 国产在线永久视频 | 日本一区二区高清免费不卡 | 很黄很肉的共妻文 | 97碰碰碰免费公开在线视频 | 国产精品久久久久久久专区 | 久久97久久| 日本少妇做爰全过 | 小视频黄站网黄 | 少妇性荡欲午夜性开放视频剧场 | 亚洲精品色情APP在线下载观看 | 欧美一区二区三区免费看 | 欧美一区二区三区成人看不卡 | 欧美网站黄 | 色戒汤唯梁朝伟七分频视频 | 日韩亚洲人成在线 | 熟女倶楽部1011熟女倶楽部 | 免费三级黄色 | 少妇被躁爽到高潮无码文 | se成人国产精品 | 国产一在线精品一区在线观看 | 亚洲午夜久久久无码精品网红A片 | 度年华免费看 | 黄污视频网站 | 五月丁香六月综合缴情基地 | 欧洲亚洲精品A片久久99果冻 | 人妻丰满精品一区二区A片 人妻换人妻AA视频 人妻激情综合久久久久蜜桃 | 网友自拍视频悠悠在线 | 亚洲无吗在线视频 | 亚洲国产精品久久久天堂 | 国产亚洲精品第一综合另类 | 色址| 欧美一级美片在线观看免费 | 无码中文字幕无码一区日本 | 一级黄色在线 | 亚洲 欧美 bt| 午夜福利32集云播 | 18丝瓜视频| 免费观看黄色a一级视频播放 | 成人午夜电影福利免费 | 日本妇人成熟A片一区-老狼 | 亚洲第一区精品观看 | 啪啪亚洲 | 热99在线观看 | 日韩在线播放中文字幕 | 成年女人免费播放影院 | 把女人弄爽特黄A大片片 | 国产精品久久久久久久久久一区 | 欧美美女一区二区三区 | 日本在线视频一区二区 | 久久AV无码乱码A片无码波多 | 99精品国产综合久久久久 | 综合激情区视频一区视频二区 | 日韩精品影视 | 国产精品久久久久久久人人看 | 精品日韩| 在线观看高清黄网站免费 | 九一毛片 | 久久直播 | 苍井空无高清码在线观看 | 午夜福利看757 | 91亚洲自偷手机在线观看 | 四房播播在线电影 | 乱护士肉合集乱500篇 | 永久免费观看国产裸体美女 | 六月丁香 五月婷婷小说 | 波多一区| 国产精品久久久久久久久久免费 | 日b在线 | 活大器粗NP高H一女多夫 | 亚洲v欧美v日韩v国产v | 欧美特黄一区二区三区 | 三级成年网站在线观看 | 在线国产播放 | 99re最新| 午夜色大片在线观看 | 精品亚洲一区二区三区在线播放 | 蜜臀AV性色A片在线观看 | 91资源在线观看 | 99久久精品国产免看国产一区 | xxnx日本のxxxnx| 91se在线视频| 熟女毛毛多熟妇人妻AV | 玫瑰之战电视剧免费 | 欧美精品成人久久网站 | 国产精品久久vr专区 | 亚洲成A人片在线播放器 | 国精品人妻无码一区二区三区喝尿 | 日本一二三区在线视频 | 亚洲精品色情APP在线下载观看 | 免费免费啪视频观看视频 | 天天干夜夜草 | 亚洲三级成人 | 欧美成人性色xxxxx视频大 | 亚洲视频国产在线精品 | 国产精品99久久久久久小说 | 久久视热在线视频精品 | 极品少妇XXXX精品少妇偷拍 | 久久亚洲精品国产精品黑人 | 无码免费人妻A片AAA毛 | 午夜精品九九九九99蜜桃 | 五月婷婷综合色 | 污污在线网站 | 无码137片内射在线影院 | 香港aa三级久久三级 | 国内精品 大秀视频 日韩精品 | 欧美猛交 | 天天色踪合合 | 伊在人亚洲香蕉精品区 | 日本黄色爽 | 亚洲精品久久久久AV无码 | 精品无人妻一区二区三区 | 影音先锋男人在线资源资源网 | 老妇毛片久久久久久久久 | 成人午夜视频一区二区国语 | 久久人视频 | 天天干天天插天天操 | 先锋五月婷婷丁香草草 | 九九天天影视 | 色99久久久久高潮综合影院 | 99国产精品国产精品 | 一体验区试看120秒 一体一道久久88色合综合网 | 亚洲国产35p | 久久夜色精品国产飘飘 | 人妻献身系列第54部 | 天天搞天天| 中国丰满熟女A片免费观 | 天天插天天爽 | 亚洲午夜久久久久久尤物 | 人妻少妇偷人无码精品AV | 无尺码精品日本欧美 | 老司机久久精品视频 | 亚洲午夜在线视频 | 欧美成人香蕉网在线观看 | 成人午夜电影福利免费 | 你懂的福利视频 | 日韩国产成人精品视频人 | 好男人WWW神马社区在线观看 | 日韩欧美国产中文字幕 | 亚洲一区二区三区四区五区黄 | 国产午夜精品一区二区不卡 | 除却巫山在线 | 国产激情视频在线播放 | 欧美精 | 久久久久久99| WWW.亚洲最大夜色伊人 | 亚洲乱码AV久久久久久久 | 性一交一乱一伦一色一情孩交 | 天天操天天干天天爽 | 波多野结衣免费在线视频 | 中文字幕在线观看不卡 | 女人被添全过程A片试看V | WWW亚洲精品久久久 www在线小视频免费 | 伊人影院蕉久影院直播福利 | 人人射人人爱 | 国产精品久久久久无码人妻 | 少妇人妻邻居做爰无码 | 精品欧美亚洲韩国日本久久 | 蜜臀国产| 亚洲自偷精品视频自拍 | 永久免费精品视频 | 啊灬啊别停灬用力啊动态图 | bl肉文推荐失禁 | 69国产成人网站 | 一级毛片卡 | 精品久久久久久无码不卡 | 国模大胆一区二区三区 | 亚州日本乱码一区二区三区 | 国产三级日产三级日本三级 | 久久亚洲精品高潮综合色A片小说 | 亚洲国产专区校园欧美 | 色播.com | 黄色爱爱网站 | 久久精品国产亚洲精品 | 69式免费视频 | 日韩在线精品视频 | 欧美一级片免费观看 | 飞空精品影院首页 | 成人男女网18免费0 成人免费在线视频观看 | 亚洲黄页| 迅雷成人网 | 女部长出差的滋味HD | 又白又紧大屁贵妇的肥水 | 国产产乱码一二三区别免费 | avtom影院永久地址人人影院 | 欧美一区永久视频免费观看 | 在线观看国产久青草 | 国色天香精品一卡2卡3卡4公司 | 无码人妻国产一区二区三区 | 麻豆一卡2卡三卡4卡网站在线 | 真人作爱视频免费视频大全 | 亚洲国产一区二区a毛片 | 日本久久久WWW成人免费毛片丨 | AV国産精品毛片一区二区 | 亚洲日产韩国一二三四区 | 黄视频网站免费观看 | 俺去也网站 | 久久国产精品999 | 色情AV亚洲精品一区二区 | 五月天丁香激情 | 色翁荡息又大又硬又粗肖艳 | 黄色毛片免费网站 | 强奷乱码欧妇女中文字幕熟女 | 欧美国产在线一区 | 国产ts最新人妖在线 | 日本精品人妻无码久久久 | 久久精品国产99久久久 | 欧洲美女高清一级毛片 | 春情为谁 | 日本久久高清一区二区三区毛片 | 在线观看免费大片 | 午夜精品在线 | 免费啪视频观免费视频 | 亚洲视频在线观看2018 | 四虎影视在线影院在线观看免费视频 | 国产在线99 | 中国ZLJZLJZLJZLJ喷网站免费 | 欧美xxxx精品另类 | 国产精品麻豆久久久 | 六月婷婷缴清综合在线 | 亚洲高清一区二区三区电影 | 2022国产男人亚洲欧美天堂 | 国产精品青青在线麻豆 | 黄色在线播放网址 | 春色 都市 亚洲 小说区 | 激情视频综合网 | 国语对白一区二区三区 | 2020天堂在线亚洲精品专区 | 黄网wwwabc300 wac免费 | 国产中文在线 | 韩国三级欧美三级国产三级 | 少妇被躁爽到高潮无码久久 | 日本精品中文字幕有码 | 日本中文字幕网 | 在线观看免费视频污网站 | 天天操天天射天天操 | 性日韩精品 | 国产免费观看a大片的网站 国产免费福利网站 | 国产精品久久人妻无码A片 国产精品久久欧美一区 | 日本高清无卡码一区二区久久 | 婷婷色九月 | 欧美躁天天躁无码中文字 | 欧美高清videosddfsexhd| 日韩无矿砖一线二线 | 日韩在线不卡视频 | 少妇做爰免费视看片 | 一日情| 亚洲αv久久久噜噜噜噜噜 亚洲xxx视频 | 很详细的肉肉床文片段 | 亚洲AV高清一区二区三区色欲 | 高清一区二区三区日本久 | 日韩在线一区二区 | 每章都有肉并且非常黄的小说 | 老头把我添高潮了A片故事 老王轻一点儿好爽在深一点 | 最新色网址 | 国产aaaaa一级毛片无下载 | 水蜜桃视频免费观看视频 | 九九久久国产 | 亚洲字幕AV一区二区三区四区 | 黄色专区 | 91精品国产免费入口 | 日本工口生肉全彩大全 | 国产精品久久久久久福利 | 在线欧美国产 | 亚洲精品一区二区三区福利 | 国产69精品久久久久人妻 | 狠狠干天天干 | 久久精品亚洲欧美日韩久久 | 日本高清不卡在线观看 | 五月欧美激激激综合网色播 | 樱花草WWW在线视频播放 | 一个人看的www在线看视频 | 无人视频在线观看视频高清视频 | 国产欧美精品AAAAAA片 | 久久视频精品3线视频在线观看 | 成人A片产无码免费奶头小说 | 在线免费视频国产 | 乳奴调教H产乳涨揉产奶调教A片 | 婷婷六月丁香缴 清 | 国产精品久久久久久久久岛 | 91国内外精品自在线播放 | 亚洲欧美综合日韩字幕v在线 | 天天综合网天天综合色不卡 | 日韩精品视频在线 | 中文字幕乱偷无码AV蜜桃 | 人与嘼在线A片观看免费 | 亚洲综合色网 | 最好看的最新的中文字幕1 最好看的最新的中文字幕3 | 亚洲AV综合色一区二区三区 | 婷婷激情综合 | 综合婷婷| 99国内精品久久久久久久 | 国产在线播放一区二区 | 手机在线精品视频 | 伊人激情综合网 | 亚洲精品www久久久久久 | 鲁一鲁综合 | 蝴蝶谷成人 | 97亚洲狠狠色综合久久久久 | 国产一级理论免费版 | 色老头成人免费综合视频 | 国产无遮挡色视频免费观看性色 | 亏亏插曲叫疼的免费网址 | 日本精品视频在线 | 进去粗粗硬硬紧紧的好爽免费视频 | 欧美亚洲国产一区二区 | 麻豆网神马久久人鬼片 | 再深点灬舒服灬太大了动态图 | 免费一级国产生活片 | 黄色网址视频免费 | 法国艳妇LARALATEXD | 好色先生app下载无限看 | 成年人免费网站视频 | 精品一区二区三区高清免费观看 | 在线观看免费视频日本高清 | 最近更新2019中文字幕免费 | 丰满五十路熟女正在播放 | 天堂中文资源在线观看 | 国产精品视频一区国模私拍 | 91在线蜜桃臀 | 韩国精品一区二区三区四区五区 | 1区2区3区产品乱码免费 | 中国精品久久精品三级 | 欧美日韩在线视频不卡一区二区三区 | 日本一在线中文字幕天堂 | 国产一级大片 | 欧美性啪啪 | 亚欧洲精品在线视频免费观看 | 大菠萝福利中心app 大尺度很黄很肉的小说 | 99re免费99re在线视频手机版 | 韩国片黄18以上在线观看 | 麻豆专媒体一区二区 | 办公室激情波多野结衣 | 郭美美17.2g ed2k | 久久99九九精品免费 | 久热精品6 | 亚洲欧美日韩国产手机在线 | 亚洲羞羞视频 | 激情A片久久久久久播放 | 肉肉描写很细致的黄文 | 日韩精品一区二区三区中文3d | 麻豆精品人妻一区二区三区蜜桃 | 免费中文字幕囯产在线网站 | 一级做a爰全过程免费视频毛片 | 韩国jizz | 91孕妇精品一区二区三区 | 91天堂视频 | 国产亚洲精品久久久性色情软件 | 亚洲成色综合网站在线 | 夜夜春成人产品 | 国产亚洲精品久久久999密臂 | 狠狠色丁香久久婷婷综合图片 | 亚洲黄色官网 | 日本一道人妻无码一区视频 | 高黄H文各种姿势PLAY道具1V1 | 日韩欧美不卡一区二区三区 | 91在线蜜桃臀 | 久久精品成人免费看 | 在线观看日本免费 | 国产aaaaa一级毛片无下载 | 欧美亚洲春色系列 | 一级免费黄色毛片 | 伦理电影我不卡87 | 一女被多男灌满白浆受孕 | 国产小视频免费在线观看 | 久久精品国产99国产精品澳门 | 五月天婷婷色综合 | 精品久久亚洲一级α | 日本大片A成人无码超级麻豆 | 波多在线播放 | 国产精品亚洲欧美动漫卡通 | 亚欧精品一区二区三区四区 | a级网站在线观看 | 最新欧美一级视频 | 国产精品久久久久久久久久98 | 亚洲国产天堂久久综合226 | 久久精品国产亚洲欧美 | 五月丁香合缴情在线看 | 网站午夜 | 精品国产3p一区二区三区 | 另类专区另类专区亚洲 | 日韩高清在线中文字带字幕 | 中国夫妻性生活片 | 国产激情视频 | 日本中文字幕永久在线 | JLZZJLZZJLZ老师好多的水 JLZZJLZZ亚洲乱熟在线播放 | 色翁荡息肉欲系列小说 | jizz日本zzz老师水多视频 | 亚洲国产中文在线视频 | 色啪啪| 亚洲国产成人精品无码区99 | 一个人在线看免费的视频 | 国产精品无码AV在线观小说 | 欧美精品无码一二三区网站 | 欧美日韩另类在线专区 | 亚洲精品一线二线三线无人区 | 国产精品视频在线观看 | 青青青国产精品免费观看 | 好硬啊进得太深了A片无码公司 | 色情A片做爰片 | 乱色精品无码一区二区国产盗 | 五月天婷婷网站 | 久久人妻国产精品31 | 精品AV一区二区三区久久 | 国产亚洲精品久久久久久国模美 | 李宗瑞性侵照片全集 | 乱亲H女秽乱常伦强强和苹苹 | 国产人妻XXXX精品HD电影 | 蜜臀91丨九色丨蝌蚪 | 亚洲AV成人无码久久精品A片 | 国产第一页浮力影院草草 | 99re久久精品在线播放 | 国产美女人人人妻 | 国产加勒比 | 伊人中文字幕 | 日韩亚洲欧美日本精品va | 免费女性裸身照无遮挡网站 | 欧美一卡2卡三卡4卡公司 | 麻花传媒MV一二三区别在哪里看 | 狠狠综合久久综合鬼色 | 少妇厨房愉情理9伦片视频 少妇大叫太大太粗太爽了A片 | 另类欧美日韩 | 有码在线 | 久热精品6 | 中文有码中文字幕免费视频 | A片扒开双腿猛进入免费观 A片好大好紧好爽视频免费 | 日韩国产欧美一区二区三区 | 国产老女人一区二区A片 | 国内精品美女视频免费直播 | 国产又色又爽又黄的免费站 | 最近中文字幕在线中文高清版 | 亚洲午夜网未来影院 | 秋霞影音先锋一区二区 | 久久91久久91精品免费观看 | 嘟嘟嘟WWW日本视频在线 | 国产精品不卡在线 | 日本一本二本三区免费免费高清 | 欧美成人精品动漫在线专区 | 两根巨龙在她腿间同时进出 | 伊人影院蕉久影院2 | 男女18一级大黄毛片免 | 黄色网址免费 | 日韩在线视频www色 日韩在线免费观看视频 | 亚洲AV在线无码播放毛片浪潮 | 日韩在线黄色 | 五月天精品视频在线观看 | 日本成本人片无码免费网站 | 人人模人人看 | 国产精品成人h视频 | 波多野结衣a∨免费观看 | 亚洲欧美中文字幕5发布 | 色中色入口 | 在线免费影院 | 好黄好猛好爽好痛的视频 | 五月婷婷之综合激情 | 国产精品久久久久a影院 | 超级狂色而且免费又超好看 | 男生解开内衣揉捏胸视频 | 日韩免费高清大片在线 | 伦理影视 | 成年片人免费www | 久久精品国产亚洲AV影院 | 日本处888xxxx | 大片免免费观看视频播放器在线观看 | 人妻少妇被粗大爽.9797PW | 欧美国产日韩综合无码 | 久久综合九色综合 | 中文有码人妻字幕在线 | 麻豆精品一区 | 五月色 网站 | 国产一区在线播放 | 日日摸天天碰中文字幕你懂的 | 欧美の无码国产の无码影院 | 国产精品免费视频一区二区三区 | 日本免费AAAAA毛片视频 | 国产宾馆自拍 | 国产人妻人伦精品1国产 | 日韩少妇内射免费播放 | 欧美一区二区三区四区在线观看 | 日本三级香港三级韩国三级 | chinese国产hdfree中文 | 蜜臀久久99精品久久久久久做爰 | 韩剧 你是我的命运 | 少妇做爰又色又紧夜视频 | 国产午夜精品AV一区二区 | 日本黄页在线观看 | 两个人免费视频在线观看直播 | 国精品人妻无码一区二区三区性色 | 深夜毛片 | 欧美成人一区亚洲一区 | 日本69sex护士wwxx | 精品AV亚洲乱码一区二区 | 国产亚洲精品AV麻豆狂野 | 电影 国产 偷窥 亚洲 欧美 | 久精品视频 | 国产高清管线免费视频 | 成熟交BGMBGMBGM日本 | 黑人巨茎大战白人女40CMO | 日本无码特黄午夜视频在线观看 | 草莓app下载 2019年 | 国产v片在线播放免费观 | 岛国大片在线播放高清 | 午夜精品久久久内射近拍高清 | 久久久久亚洲精品影视 | 农村熟妇高潮精品A片 | 国产偷抇久久精品A片69 | 亚洲婷婷综合网 | 一起探恋爱综艺在线观看第七期 | 拉风色影院 | 男子扒开美女尿口做羞羞的事 | 国产精品美女久久久久AV超清 | 欧美精品色婷婷五月综合 | 九色综合亚洲色综合网 | 日本午夜片成年www 日本午夜精品 | 国产亚洲日本精品无码电影 | 国产精品悠悠久久人妻精品 | 天天综合色天天综合 | 狠狠色色综合站 | 国产精品一区二区AV白丝在线 | 乱码一二三入区口 | 亚洲欧美在线观看一区二区 | 强行征服丰满人妻 | 日本高清无日本高清视频 | 91国内视频 | 日韩在线观 | 无码欧美一区二区三区 | 午夜久久久久久禁播电影 | 好色电影院 | 8x成人永久在线观看视频 | 国产精品久久久久久日本 | 毛茸茸性毛茸茸大b | 欧美流行 在线播放 | 免费一级a毛片在线播放 | 日本中文字幕高清 | 撸撸在线影院 | 欧洲丰满少妇做爰视频爽爽 | 国产精品免费一级在线观看 | 黑人巨茎大战白人女40CM | 国产欧美日韩一区二区三区在线 | 99精品久久久久中文字幕 | 国产自偷| 日本熟妇乱人伦A片一区 | 久久久久毛片免费观看 | 客厅乱H伦亲女小说 | 国产乱码精品一区二区三区久久 | 天天干视频网站 | 久久亚洲精品高潮综合色A片小说 | 日韩毛片免费 | ijzz日本 | 性瘾荡乳H古代 | 日韩免费一级毛片 | 好看的a v片名字 | 在线观看成人A片免费播放 在线观看免费的小电影网站 | 日韩精品无码一区二区三区 | 无码人妻丰满熟妇啪啪区日韩久久 | 国产又爽又黄又爽又刺激 | 中文字幕亚洲视频 | 久久草这在线观看免费 | 色多多APP福引导入口 | 国产制服一区 | 日本高清在线一区 | 亚洲欧美成人无码久久久 | 嗯啊在线观看 | 国产精品内射后入合集 | 亚洲免费天堂 | 在线观看国产精选免费 | 色导航网址大全 | 91制片厂果冻传媒公司麻豆 | 光棍影片在线观看免费 | 日产乱码一区二区三区在线 | 亚洲 欧美 字幕 一区 在线 | 最近最新中文字幕免费1 | 欧美14一15sex性h | 再深点灬舒服灬太大了动态图 | 伦理片琪琪影院免费观 | 在线日韩中文字幕 | 最近最新的日本免费 | 欧美午夜精品A片一区二区HD | 日本一本为道高清视频 | 2022年国产精品久久久久 | 男人的天堂av2024在线 | 永久免费看A片无码播放器不卡 | 日韩天天操 | 国产亚洲va在线电影 | 能免费看的色情成人网址 | 亚洲伦理网站 | 国产免费人成在线视频视频 | 三级网站大全 | 国内精品久久久久久中文字幕 | 国产JJZZJJZZ视频免费看 | 影音先锋熟女少妇AV资源 | 全黄H全肉边做边吃奶NP | 色欲AV久久一区二区 | 亚洲一级特黄特黄的大片 | 国产又爽又猛又粗的视频A片 | 肉欲系列短500篇小说合集 | 色五月在线视频 | 四房播播qvod | 亚洲 暴爽 AV人人爽日日碰 | 91爱视频| 最好看十大无码AV | 久久久久久久久97 | 黄色片网站免费观看 | 日本视频一区二区免费播放 | 国产视频福利一区二区 | 国产欧美精品系列在线播放 | 亚洲 欧美 字幕 一区 在线 | 成人片在线观看地址KK4444 | 天天干夜夜怕 | 亚洲欧美bt| 日韩精品一区二区三区免费视频 | 三级欧美日韩 | 被工地工人轮着上雯雯 | 成熟妇女A片高潮免费看 | 国产三级观看久久 | 一个人看的www免费观看视频 | 久久综合社区 | 三级黄色一级视频 | 春宵福利网站在线观看 | 亚洲欧美精品无码一区二在线 | 能播放女人另类ZOOZ0 | 毛片一级 | 深爱激情五月婷婷 | 国产综合亚洲区 | 巨肉超污巨黄H文小短文 | 午夜欧美| 久久老色鬼天天综合网观看 | 亚洲金属网 | 亚洲精品一区二区三区早餐 | 西西人体做爰大胆视频韩国 | 最好韩国日本高清免费 | 四虎影视免费观看高清视频 | 中文字幕精品AV一区二区五区 | 韩国18禁床震吃胸喝奶视频 | 手机看片久日韩 | 成人精品在线 | 亚洲精品久久久久久久久久久 | 日韩欧美一区二区三区免费观看 | 男人把我添到了高潮A片 | 久久AV亚洲精品一区无码 | 天海翼一区二区三区四区 | 99国产精品人妻无码一区 | 老太婆BBBBBB视频 | 国产在线观看首页123 | 国产高清亚洲日韩字幕一区 | 欧美 国产 亚洲 卡通 综合 | 午夜精品成人毛片 | 亚洲凤凰av免费观看 | 老湿免费 | 午夜视频在线观看一区二区 | 亚洲一线二线三线品牌精华液久久久 |