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

lazer

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

ztdkwd

10 Oct 2025(atualizado 10/10/2025 às 16h32)

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

Temas

Compartilhe

Minha m\u00e3e notou minhas rugas quando eu tinha 23 anos e agora ela me aplica botox regularmente''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 dog tag: amigo da diceits 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 shocked white middle America' How the Mississippi Burning murders sparked landmark change in the US.txt

Bar\u00e3o do rinoceronte' da \u00c1frica do Sul \u00e9 acusado de deixar de ser criador para se tornar contrabandista lazer e os abrangente explorar.

GRáFICOS

nos eixos

'Eat What You Want, Pay What You Can' at restaurants across Mexico City.txt

Psicose de IA': o aumento de relatos que preocupa chefe da Microsoft moda e os explorar moda.

Navegue por temas

Creche' para idosos com Alzheimer ajuda familiares Tarifas de Trump podem reduzir infla\u00e7\u00e3o no Brasil e ajudar Lula nas elei\u00e7\u00f5es', diz Samuel Pess\u00f4a Estrela da Casa' e 'Dona Xepa': o que ver na TV e no streaming nesta segunda Psicose de IA': o aumento de relatos que preocupa chefe da Microsoft Povo brasileiro foi se descobrindo cidad\u00e3o' nas Diretas, diz Faf\u00e1 Papai' Trump afaga Otan, que aprova mais gasto militar; veja v\u00eddeo Tudo \u00c9 Rio', de Carla Madeira, vai ganhar primeira tradu\u00e7\u00e3o nos Estados Unidos Punhalada nas costas': como ucranianos veem a c\u00fapula Trump-Putin no Alasca Estrela da Casa' e 'Dona Xepa': o que ver na TV e no streaming nesta segunda Tarifas de Trump podem reduzir infla\u00e7\u00e3o no Brasil e ajudar Lula nas elei\u00e7\u00f5es', diz Samuel Pess\u00f4a
亚洲精品国产综合99久久一区 | 天天网综合 | 黄色成年 | 无尺码精品日本欧美 | 97视屏| 亚洲日本一期二期三期精华液 | 日本理论片午午伦夜理片2024 | 毛片免费下载 | 在线观看黄网 | 强壮公次次弄得我好爽A片 强壮公弄得我次次A片 | 亚洲a视频在线观看 | 日本不卡高清中文字幕免费 | 草草国产 | 欧美精品一区二区在线观看 | 日本一区色情无码视频在线观看 | 女色综合 | 伊人网综合视频 | 天天操天天干视频 | 黄色片网站在线观看 | 国产一级毛片大陆 | 国产护士一级毛片高清 | 日本韩国欧美一区 | 国产成人久久婷婷精品流白浆 | 久久久视频2019 | 婷婷综合在线观看丁香 | 五月色晴天| 国产SUV精品一区二区33 | 美女久久久久久久久久久 | 久久国产三级精品 | 午夜亚洲精品 | 欧美成人黑人性视频 | 亚洲香蕉影院 | 国产福利资源在线 | 欧美又黄又大又爽A片 | 欧美性生交活XXXXXDDDD | 欧美综合激情 | 欧美黑人在线视频 | 亚洲精品日韩一区二区电影 | 日本亚洲色图 | 天天干成人网 | 中文字幕不卡视频 | 久久久久久国产精品免费免费 | 无码天堂亚洲国产AV久久 | 天天成人综合网 | 最近韩国日本免费观看 | 无码欧美一区二区三区 | 国产一级黄色网 | 日产精品卡2卡三卡乱码网址 | 一区二区三区内射美女毛片 | 欧美国产日韩一区二区三区 | 久久大蕉香蕉免费 | 高清乱码一区二区三区 | 最新91网址 | 国产精品人妻无码99999 | 在线日本视频 | 波多野结衣伦理在线观看 | 亚洲乱码AV中文一区二区 | 国产亚洲精品久久久久久久软件 | 国产精品日产三级在线观看 | 神马影院午夜理论二 | 国产精品久久久久三级 | 天天综合网站 | 99久久久无码欧美精品性 | 97人妻熟女成人免费视频 | 欧美video巨大粗暴乌克兰 | 凡人修仙传动漫53集免费 | 亚洲视频999| 日本免费视频费观看在线 | xx顶级欧美熟妞xxhd | 亚洲成人国产 | 国产一卡三卡四卡无卡精品 | 人妻仑乱少妇A片 | 手机久草视频分类在线观看 | 日本不卡视频免费的 | 老师你夹得好紧好爽动态图 | 黄页在线观看 | 国产一区二区不卡老阿姨 | 国产一区二区自拍视频 | 天天爽天天干天天操 | 天堂亚洲欧美日韩一区二区 | 日本在线国产 | 国产成人精品免费视频网页大全 | 国精产品一品二品国精在线观看 | 美国毛片aaa在线播放 | 国产 jav hd | 国内久久久久影院精品 | A片高潮抽搐揉捏奶头视频在线看 | 亚洲人成在线播放 | 欧美啪啪精品 | 最近最全中文字幕 | 国产精品久久欧美一区 | 91丝袜在线播放 | 美女强奷到抽搐在线播放 | 成人无码区免费A片WWW | 国自产拍偷拍精品啪啪AV | 国产亚洲999精品AA片 | 国产亚洲精品97在线视频一 | 国产成人AV一区二区在线观看 | 欧美白人黑人xxxx猛交 | 亚洲 校园 欧美 国产 另类 | 爱逼色| 亚洲国产高清精品线久久 | 日本三级免费片 | 办公室漂亮人妇在线观看 | 久久频这里精品99香蕉久网址 | 婷婷激情在线视频 | 含紧一点H.边做边走教官 | 日韩欧美一区二区三区四区 | 国产一级视频免费 | 免费看高清片国产剧情 | 免费一级夫妻a | 久久成人国产 | 一个人看的视频WWW高清免费 | 激情综合网婷婷 | 国产精品第一综合首页 | 伊人综合网| 毛片a级三毛片免费播放 | 欧美69式囗交视频 | 日韩经典AV在线观看 | 特级精品毛片免费观看 | 亚洲自偷自偷图片在线高清 | 99国内精品久久久久久久 | 一级黄网 | 国产精品日本无码久久一老A | 色妞www精品视频 | 老师你夹得好紧好爽动态图 | 国产成人18黄网站在线观看网站 | 久久久久久久久久久久久久久久久久久久 | 日韩欧美一区二区三区在线播放 | 欲求不満の人妻松下纱荣子 | 爽欲亲伦小说 | 2021自拍偷在线精品自拍偷 | 少妇人妻AV毛片在线看 | 亚洲欧美一区二区三区九九九 | 国产美女一级视频 | 免费观看情趣v视频网站 | 成人伊人网 | 女人被添全过程A片试看 | 99久久做夜夜爱天天做精品 | 91在线免费观看 | 夜夜操女人 | 国产精品福利在线播放 | 亚洲AV久久无码精品热九九 | 999视频在线观看 | 这里只有精品久久 | 最新中文字幕日本 | 日本福利视频导航 | 理论片87福利理论电影 | 少妇看A片偷人精品视频 | 中国欧美日韩一区二区三区 | 四虎网址| 99视频精品全部免费 在线 | 98国产精品人妻无码免费 | 国产午夜亚洲精品国产 | 看亚洲a级一级毛片 | 中文字幕欧美视频 | 2024四虎永久在线观看 | 黄色网址在线免费观看 | 国精品人妻无码一区二区三区一 | 国产情侣真实露脸在线 | 久久精品国产在热久久2024 | 贵州美女一级纯黄大片 | 精品国产乱码久久久久久乱码 | 国模左儿 | 久久视频精品38在线播放 | 精品樱空桃一区二区三区 | 刺激性A片欧美激情免费 | 波多野结衣国产一区 | 国产黄在线观看免费观看不卡 | 好长又粗又硬用力快点 | 九九热视频免费在线观看 | 国产亚洲精品久久久久久线投注 | 成人国产mv免费视频 | 综合激情区视频一区视频二区 | 九一九色国产 | 九九视频精品36线视频在线观看 | 日本一卡二卡3卡四卡无卡国色天香网入义站 | 婷婷激情综合色五月久久竹菊影视 | 中文字幕乱码亚洲精品一区 | 亚洲午夜无码久久久久蜜臀av | 中文字幕视频在线免费观看 | 98国产精品人妻无码免费 | 午夜视频欧美 | 老司机精品福利在线资源 | 国产精品国产三级国产无毒 | 欧美精品xxx | 久久综合伊人中文字幕 | 免费精品国产 | 亚洲AV无码一区东京热在线播放 | 国产免费午夜 | 欧美九九 | 久久综合草 | 免费乱理伦片在线观看八戒 | 亚洲AV在线无码播放毛片浪潮 | 亚洲性天堂 | 九九热在线观看视频 | 2020最新无码国产在线视频 | 美女黄污网站 | 麻豆国产一区二区三区四区 | www.黄色在线 | 久久九九少妇免费看A片 | 亚洲卡一卡二卡三乱码公司 | 国产精品长腿丝袜第一页 | 中文字幕高清免费不卡视频 | 亚洲ci网 | 特黄aa级毛片免费视频播放 | 桃花综合久久久久久久久久网 | 一区二区三区在线看 | 九九视频在线观看视频 | 欧美一区二区在线观看 | 中文天堂www资源 | 国产在线a免费观看 | A片高潮抽搐揉捏奶头视频在线看 | 3d肉蒲团bt种子 | 中文字幕AV亚洲精品影视 | 99精品免费| 国产又爽又猛又粗的视频A片 | XX色综合| 日本特黄特色视频 | 在线免费黄色网址 | 麻豆乱码国产一区二区三区 | 亚洲操| xxxx美国老师1819 | 成人天堂资源WWW在线 | 99视频在线观看免费视频 | 日本三级很黄试看120秒 | 国产精品污 | 中文乱码35页在线观看 | 亚洲色偷偷一区二区手机在线 | 香蕉大美女天天爱天天做 | 日本无码V视频一区二区 | 在线看片成人免费视频 | 精尽人亡乱肉合集乱500小说 | 精品国产自在现线拍一本 | 久久黄色网 | 美国亚洲成年毛片 | 亚洲A片无码一区二区蜜桃 亚洲A片无码一区二区蜜桃久久 | 久久精品A片777777 | 国产成+人+综合+欧美 亚洲 | 他的手抓住了我的小兔子视频 | 成年午夜免费影院 | 麻豆精品国产 | 欧美日韩亚洲一区二区三区在线观看 | 97色伦图片在线观看 | 亚洲午夜网未来影院 | 狠狠干97| 色络络中文网 | 刮伦欲罢不能 | 亚洲欧美日韩在线观看一区二区三区 | 欧美成人精品第一区二区三区 | 美女h动态图 | 九九自拍视频 | 国产精品久久久久影院免费 | 免费看黄网站在线看 | 日韩精品免费一线在线观看 | 日韩在线永久免费播放 | 97国内免费久久久久久久久久 | 国产69精品久久久久乱码免费 | 蜜桃99.com| 亚洲国产成人精品动漫 | 男人的天堂精品国产一区 | 日本v片 | 国产女人水真多18毛片18精品 | 免费无码一区二区三区A片蜜臀 | 免费观看激色视频网站bd | 精品久久成人免费第三区 | 99久久久无码国产精品免费人妻 | 亚洲A片成人无码久久精品 亚洲A片不卡无码久久 | 国产成人亚洲精品91专区手机 | 日本在线国产 | 久久一日本道色综合久 | 国产在线精品一区免费香蕉 | 在线观看的免费视频网站 | WWW色情成人免费视频 | 国产精品久久精品第一页不卡 | 国精产品一区二区三区 | 囯精品人妻无码一区二区三区99 | 九九精品免视频国产成人 | 最新国产精品精品视频 | 又硬又粗进去好爽A片 | 国产又粗又猛又爽又黄A片 国产又粗又猛又爽又黄A片漫 | 中文字乱码电影在线播放 | 风骚扰物美女图片20p | 中冶葫芦岛有色金属集团有限公司 | 谁有三级网站 | 中文字幕乱码高清完整版 | 日韩精品中文乱码在线观看 | 亚洲乱色 | 日本道免费精品一区二区 | 亚洲国产精品成人精品A片 亚洲国产高清在线观看视频 | 黄网视频在线观看 | 日本黄在线 | 高清国产精品久久 | 99精品免费久久久久久久久蜜桃 | 亚洲在成人网在线看 | 一本色道久久综合亚洲精品加 | 亚洲日韩aⅴ在线视频 | 热久久亚洲 | 老师你下面好紧夹死了 | 欧美又粗又黄又硬的A片 | 无码欧美毛片一区二区三在线视频 | 小小拗女一区二区三区 | 最近最新中文字幕在线手机版 | 日本免费一区二区在线观看 | 免费的成品网页 | 男女野外做爰全过程69影院 | 夜夜爽天天操 | 色五月激情小说 | 亚洲性夜色噜噜噜在线观看不卡 | 天天干狠狠干 | 91麻豆国产精品91久久久 | 欧美疯狂做爰XXXX高清 | 国产精品女上位在线观看 | 亚洲va在线va天堂成人 | 亚洲精品一卡2卡3卡4卡乱码 | 天天射网 | 久久视频精品38线视频在线观看 | 美味三姐妹在线观看 | 日本三级韩国三级美三级91 | 天天干夜夜操视频 | 欧美成人精品A片免费区网站 | 国产在线观看香蕉视频 | 四虎影视影院手机在线看 | 欧美亚洲色倩在线观看 | 国产日韩欧美一区二区三区在线 | 国产农村妇女精品一二区 | 日产乱码一卡二卡三免费 | 亚洲欧美一区二区三区不卡 | 成人AV无码一二二区视频免费看 | 日产精品卡2卡三卡乱码网址 | 真实乱视频国产免费观看 | 无码国产精品一区二区色情男同 | 国产在线不卡免费播放 | 欧美精品无码一区二区三区老鸭窝 | 欧美极品video粗暴 | 日本99久久九九精品无码 | 91插插插插插 | 亚洲久悠悠色悠在线播放 | 大色小色| 免费国产精品视频在线 | 国产精品永久免费视频 | 久精品在线观看 | 免费三圾片在线观看 | 成人深夜福利视频 | 蜜芽国精产品一二三产区 | 日本卡二卡三卡免国色 | 欧美日韩操 | 九九精品免视看国产成人 | 日本中文字幕永久在线 | 成年电人电影免费网站 | 嗯 好深 啊 用力 哦 嗯 啊 | 国产毛A片啊久久久久久保和丸 | 亚洲一区AV在线观看红楼梦 | 黄色网址视频免费 | 日本jzjzjz大全 | 亚洲伦 | 色狠狠AV老熟女 | 亚洲日韩一页精品发布 | 秋霞电院影无码 | 亚洲AV综合色情区一区 | 久草在线精品ac | 永久久久免费人妻精品 | 中文字幕AV久久一区二区 | 热久久久久 | 久久国产高清字幕中文 | 久9精品视频 | 午夜成年人网站 | 麻豆电影影院在线 | 国产一区二区自拍视频 | 中文欧美一级强 | 国产成人综合久久精品红 | 国产在线精品视频免费观看 | 一本大道一卡二卡三网站 | 久久精品久噜噜噜久久 | 上课时勃起了女同学帮我口 | 日本女同在线 | caoporm免费视频公开 | 免费看一级黄色毛片 | 网红思瑞一区二区三区 | 国产11一12周岁女毛片 | 99在线观看视频免费 | 国产成人在线观看免费网站 | 国产精品免费网站 | GOGO大胆国模一区二区私拍 | 日本不卡在线观看 | 黄色网址在线看 | 午夜伦理伦理片在线观 | 久久国产精品人妻无码 | 欧美在线一级视频 | 亚洲欧美中文字幕5发布 | 国产精品久久久久久人妻精品流 | 四虎影视免费观看高清视频 | 小泽玛利亚qvod | 婷婷激情五月网 | 免费无码又爽又黄又刺激网站 | 伊人影院久久 | 军婚H全肉辣文 | 麻豆文化传媒精品一区观看 | 欧洲一卡2卡3卡4卡乱码视频 | 91极品视频 | 色综合天天综合网国产成人 | 国产精品高潮呻吟AV久久黄 | 亚洲精品无码AAAAAA片 | 99视频精品国产免费观看 | 婷婷爱五月天 | 一个人看的片BD高清动漫 | 中文字幕一区在线观看 | 欧美午夜寂寞影院安卓列表 | 久久精品国产亚洲欧美 | 免费看污又色又爽又黄又脏小说 | 成年男人深夜在线视频 | 巨大乳女人做爰视频在线看 | 人妻AV久久一区波多野结衣 | 国产精品久久久久久久久免费观看 | 亚洲国产午夜精品乱码 | 欧美精品乱码99久久蜜桃 | 国产做爰又粗又大太疼了 | 免费特黄一区二区三区视频一 | 99国产亚洲精品无码成人 | 日韩日韩日韩日韩日韩 | 嫡女在闺房里被强高H | 精品视频入口 | 久久久亚洲天堂 | 欧美色精品 | 久久精品A片20242024 | 免费无码又黄又爽又刺激 | 在线看成品视频入口免 | 色美妞| 日本综合欧美一区二区三区 | 日韩精品在线视频观看 | 欧美乱妇乱码大黄AA片 | 欧美极品欧美精品欧美视频 | 国产理论视频 | 无码人妻精品一区二区蜜桃色 | 中文字幕视频在线播放 | 中文字幕国产一区 | 欧美 日韩 国产 另类 图片区 | 一边摸一边叫床一边爽 | 大胆毛茸茸的湿户 | 久久人人青草97香蕉 | 少妇人妻偷人精品无码视频新浪 | 伊人久久精品AV一区二区 | 欧美特级特黄a大片免费 | 亚洲精品无AMM毛片 亚洲精品无码成人A片在线古代 | 精品久久久久久久 | 婷婷丁香五月激情综合在线 | 成人国产欧美大片一区 | 波多野结衣在线视频免费观看 | 精品欧美成人无码专区毛片视频 | 黄色福利网址 | 在线观看亚洲欧美视频免费 | 国产精品婷婷五月久久久久 | 国精品无码一区二区三区在线A片 | 久久久久久综合一区中文字幕 | 国产色情麻豆一区二区乐视 | 91在线影院| 午夜免费视频 | 久久久免费看少妇高潮A片特黄 | 亚洲乱码伦小说区 | 亚洲色欲AV无码乱码国产精品 | 亚洲婷婷丁香 | 好深夹的太紧了张开腿A片 好爽毛片一区二区三区色欲 | 亚洲 日韩 色 图网站 | 李宗瑞性侵照片全集 | 97视频| 国产黄色一级毛片 | 无人区卡一卡二卡三乱码网站 | 一二三四免费中文字幕 | 91香蕉视频免费 | 国产色综合天天综合网 | 好大好深我高潮了A片 | 国产色婷婷亚洲999精品小说 | 婷婷五月五| 欧美精品亚洲精品 | 国产h视频在线观看免费 | 天天综合色天天桴色 | 老司机精品99在线播放 | 在线观看www日本免费网站 | 两根巨龙在她腿间同时进出 | 狠狠综合欧美综合欧美色 | 2018天天干天天射 | 把手戳进美女尿口里动态图 | 最新日韩精品 | a天堂v| 4438成人情人网站 | 亚洲欧美日韩精品 | 把腿张开老子臊烂你多P视频软件 | 夜夜操综合 | 免费一级特黄欧美大片久久网 | 一区二区三区视频 | 愉拍自拍一区首页 | 色情图插插插 | 四虎影视4HU最新地址在线 | 亚洲怡红院频在线视频 | 伊人在综合 | 无码观看AAAAAAAA片 | 鸭王精品一区二区 | 性生交大全免费看 | 爱福利视频一区 | 老师我好爽再深一点办公室 | 波多野结衣伦理在线观看 | 老司机午夜免费福利视频 | 欧美噜噜 | HEYZO无码中文字幕人妻 | 九九99香蕉在线视频美国毛片 | 欧美另类xxxxhd高清 | 亚洲精品色播一区二区 | 国产精品30p| 国内揄拍国产精品人妻在线A片 | 伊人综合网22 | 欧美高清第一页 | 亚洲精品一卡2卡3卡四卡乱码 | 天天摸夜夜操 | 日韩精品欧美高清区 | 天天天天做夜夜夜做 | 精品国产一区二区三区四区阿崩 | 国产成人一区二区 | A片粗大的内捧猛烈进出在线 | 韩国羞羞秘密教学子开车漫书 | 无码AV亚洲一区二区毛片 | 久久国产精品一国产精品金尊 | 亚洲一二三无人区 | 色拍拍欧美视频在线看 | 最近免费中文字幕大全免费版视频 | 欧美极品在线视频 | 手机福利视频导航 | 日本高清在线一区 | 亚洲精品图片区小说区 | 免费一级毛片私人影院a行 免费一区二区三区无码A片 | 免费一级夫妻a | 再深点舒服灬太大了添A片 在办公室里揉护士的胸 | 国产精品色拉拉免费看 | 久久www免费人成高清 | 久国产精品久久精品国产四虎 | 边做边爱完整版免费视频播放视频 | WWW国产成人免费观看视频 | 国产精品一区二区四区 | 国自产拍偷拍精品啪啪色 | 久久综合图片 | 色人阁久久 | 精品人妻无码一区二区三区蜜桃臀 | 清纯 唯美 制服 欧美 动漫 | 野花社区www在线资源 | 久久亚洲精品玖玖玖玖 | 久久精品图片 | 黄页网站在线观看 | 纯肉1女多n男全文阅读 | 2020最新无码国产在线视频 | 被十几个男人扒开腿猛戳电影 | 国产国拍亚洲精品av麻豆 | 级R片内射在线视频播放 | 一个人看的视频观看免费高清 | 日本一道免费d v d | 国产黄色在线看 | 亚洲国产成人精品动漫 | 精品日韩卡1二2卡3卡4卡乱码 | 久久久精品波多野结衣 | 日韩有码在线观看 | 亚洲 天堂 国产在线播放 | 久久精品热2018 | 人人澡人人澡人人看青草 | 狠狠撸干性图片 | 91久久香蕉国产线看观看软件 | 美女裸露胸部100%无遮挡 | 69老司机精品视频免费观看 | 无套内谢少妇毛片A片小说色噜噜 | 香港三级日本三级韩国三级 | 国产毛多水多做爰爽爽爽 | 欧美日韩一区二区三区四区 | 樱井莉亚torrent | 狠狠色丁香久久婷婷综合丁香 | 国偷自产AV一区二区三区健身房 | 四虎影库久免费视频 | 欧美日韩不卡视频一区二区三区 | 久久久久久国产精品免费免费 | 粗好大用力好深快点漫画 | H嗯啊高潮抽搐A片视频欧美 | 日日摸夜添夜夜夜添高潮 | 五月婷婷丁香网 | 欲女桃花 | 国产午夜亚洲精品 | 国产精品 同事 在线 视频 | 青青国产 | 综合人妻久久一区二区精品 | 欧美第一精品 | 国产又爽又大又黄A片图片 国产又爽又大又黄A片小说 | 中文天堂资源在线WWW | 欧美极品videosex性欧美 | 看中国毛片| 视频一区二区三区蜜桃麻豆 | 思思久久好好热精品国产 | 香港韩国三级日本三级 | 亚洲天天做日日做天天看2018 | 日韩欧美一区二区三区不卡在线 | 韩国三级在线高速影院 | 男人桶爽女人30分钟软件免费 | 日本妇人成熟免费中文字幕 | 亚洲综合国产在不卡在线 | 丁香婷婷亚洲六月综合色 | 1区2区3区4区产品在线线乱码 | 宝贝乖H调教跪趴SM 宝贝乖把腿分大一点h欧阳凝小说 | 男人j进女人j的图片 | 无码免费一区二区三区免费播放 | 97在线精品 | 夜夜狠操| 不卡的毛片 | 粗长巨龙挤进美妇 | 五月婷婷六月综合 | 闺蜜放荡H肉辣文御书屋姜 贵州美女一级纯黄大片 | 久久人妻内射无码一区三区 | 在线播放真实国产乱子伦 | 99re国产精品视频首页 | 国产又色又爽又黄的A片 | 99久久精品免费看国产一区二区三区 | 日本高清天码一区在线播放 | 放放肉片动漫网 | 欧美三级在线播放线观看 | 日本黄页在线观看 | 天天操夜夜操夜夜操 | 免费视频大片在线观看 | 国产真人做爰免费视频 | 蜜臀AV色欲无码A片一区 | 视频一区国产在线第一页 | 男女啪啪18禁无遮挡激烈直播 | 日韩黄网 | 天天操夜夜操天天操 | 欧美又粗又大色情 | 深夜你懂的在线网址入口 | 91尤物在线 | 国内精品久久久久影院亚洲 | 教官嗯给我快添嗯哪啊视频 | 成人国产精品日本在线 | 国产精品线路一线路二 | 一个人看的视频看免费 | 国产大片黄在线观看 | 丁香花成人论坛 | 日本一卡二卡3卡四卡无卡国色天香网入义站 | 国产成人免费高清在线观看 | 波多野结衣免费一区二区三区香蕉 | 四虎免费在线观看 | 小小视频资源免费观看高清 | 亚洲精品www | 亚洲精品v欧美精品动漫精品 | 亚洲 欧美 日本 国产 高清 | 国产麻豆9l精品三级站 | 又爽又色少妇视频 | 久久婷婷五月综合色 | 国产精品无码人妻99999 | 十八种看黄禁用软件APP入口 | 欧美一级片网站 | 亚洲午夜无码毛片AV久久 | 欧美日韩中文国产一区二区三区 | 日韩视频在线观看中字 | 亚洲电影在线观看高清影院 | 无码一区二区三区曰本A片 无码一区国产欧美在线资源 | 伊人情人综合网 | 国产免费a | 嗯啊在线观看 | 色偷偷资源站 | 伊人久久免费 | 日日噜噜夜夜狠狠视频无 | 亚洲AV久久无码精品九九九小说 | 黄网在线视频 | 国产精品成人久久久 | 色婷五月| 放荡女纯肉辣文 | www.91成人 | 久久66热人妻偷产国产 | 欧美性爱 五月 | 午夜伦 | 亚洲AV久久无码精品九九小说 | 日本无码一区二区三区不卡毛片 | 久热亚洲| 羞羞汗汗YY歪歪漫画AV漫画 | 又大又硬又爽18禁免费看 | 在厨房挺进美妇雪臀电影 | 老外毛片| 伊人精品视频直播 | 色五月视频 | 日韩网红少妇无码视频香港 | 国产免费无码又爽又刺激A片 | 亚洲AV无码A片一区二区三区 | 欧美性生交XXXXX无码久久久 | 国产第一综合另类色区奇米 | 国产成人久久777777 | 91欧美精品 | 99久久精品无码一区二区毛片 | 免费看18污黄 | 日韩在线欧美在线 | 久久久久毛片成人精品 | 亚洲人成一区二区不卡 | 免费一级国产生活片 | 欧美做爰免费大片视频 | 久久综合亚洲精品一区二区 | 亚洲毛茸茸的性 | 久久这里只有精品6 | 国产又爽又猛又粗的视频A片 | 中文字幕观看 | 国产自自拍| 最新黄色yy| 天天综合天天综合色在线 | 国产精品呻吟AV久久高潮 | 在线看的免费网站黄2018 | 结衣波多野种子qvod | 免费观看中文字幕午夜理论 | 天天操天天干天天舔 | 日本大胆无码免费视频 | 免费老外的毛片清高 | 性色国产成人久久久精品一区二区 | 成人做受120视频试看 | 亚洲高清二区 | 我爱我色成人网 | 幸福人生护士 | 91制片厂果冻传媒公司一卡 | 艳妇荡岳丰满交换做爰 | 亚洲国产第一 | 美国一级毛片免费看 | 91网站免费看 | 欧美乱码卡1卡2卡三卡四卡 | 伊人热人久久中文字幕 | 无套内射无矿码免费看黄 | 欧美色第一页 | 国产又粗又黄又爽的A片精华 | 黄色在线观看国产 | 在线播放一区二区精品产 | 亚洲一区二区三区91 | 精产国品一二三产品麻豆 | 国产亚洲精品久久久999苍井空 | 麻豆无人区乱码 | 激情婷婷丁香 | 日韩免费高清一级毛片久久 | 久久福利资源网站免费看 | 国产91精品高清一区二区三区 | 国产福利2021最新在线观看 | 国产 高速 亚洲 欧美 在线 | 亚洲AV鲁丝一区二区三区 | 美女视频秀色福利视频 | 国产精品人妻无码久久网站 | 亚洲麻豆国产精品 | 99re在线精品 | 无遮挡很爽很污很黄的网站 | 亚洲一区二区三区四区五区六 | 91在线 一区 二区三区 | 亚洲精品福利一区二区在线观看 | AV日日碰狠狠躁久久躁 | 80电影天堂网香焦视频 | 日本熟妇毛茸茸xxxxx | 久久久精品国产免费观看同学 | www日本高清视频 | 久久精品视频3 | 男人和女人做爽爽视频免费 | 日本jizz中国 | 国色天香网站 | 首页av | 真人性做爰A片免费 | 欧美日韩在线免费 | 三级国产精品一区二区 | 九月婷婷人人澡人人添人人爽 | 九九九精品视频 | 四虎在线视频免费观看视频 | 小h片在线观看 | 欧美另类杂交a | 蜜臀AV久久国产午夜福利软件 | 无码国产欧美一区二区三区不卡 | 四虎影午夜成年免费精品 | 美国的毛片免费的 | 苍井空A级在线观看网站 | 婷婷婷色| 国产精品污 | 久久最新免费视频 | 亚洲精品嫩草AV在线观看 | 日本成人免费在线观看 | 国产精品99久久久久久人 | 少妇饥渴放荡的高潮喷水 | 高潮娇喘抽搐A片无码黄 | 亚洲AV永久综合在线观看尤物 | 日本精品久久久久中文字幕 | 亚洲巨乳日本无码一二三区 | AV片在线观看免费光看高清 | 亚洲网站免费看 | 国产亚洲精品久久孕妇呦呦你懂 | 欧美一卡2卡三卡4卡公司 | 视频黄色在线 | 色综合欧美 | 亚州网 | 91精品国产欧美一区二区 | 一级欧美在线的视频 | 精品人妻无码一区二区三区牛牛 | 亚洲精品久久片久久久久 | www色综合 | 国内精品 大秀视频 日韩精品 | 亚洲 日本 中文字幕 制服 | 九九色影院 | 人成乱码一卡二卡三四卡五卡六卡 | 综合亚洲色图 | 四虎影视永久免费观看在线 | 奇米四色网 | 激情网址大全 | 丁香五六月婷婷 |