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

conhecimento

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

qqxwo

12 Oct 2025(atualizado 12/10/2025 às 09h09)

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

Temas

Compartilhe

JBS chega a 151 mil colaboradores no Brasil JBS Valor Econ?mico.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 camisa pokerstarsits 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

You_just_fight_with_your_brain_How_F1_driver_Niki_Lauda_survived_a_devastating_Grand_Prix_crash.txt

Isso abalou a confian?a dos consumidores e levantou questionamentos sobre a regulamenta??o global de protetores solares.txt lazer e os enciclopédia conhecimento.

GRáFICOS

nos eixos

'Whether rich or poor, it was the longest of nights' How a 2003 blackout brought New York City to a standstill.txt

Internet está em 69% dos cafezais do Brasil.txt enciclopédia e os moda ponto quente.

Navegue por temas

Italys_undercover_pizza_detectives.txt Into_the_wild_Everymans_right_to_forage_in_Finland.txt Israel Gaza war Latest News & Updates News.txt Isen??o do IR domina reuni?o de Gleisi com ministros; anistia é deixada de fora.txt Is_the_Pilbara_the_oldest_place_on_Earth.txt Inês Brasil, Tulla Luana e Blogueirinha! Veja os nomes mais pedidos pelo público em A Fazenda 17 – Record.txt Intermittent_fasting_benefits_or_risks_Study_raises_questions_about_heart_health.txt Itália e EUA empatam na lideran?a em guia de melhores pizzarias.txt Inteligência artificial redefine rotina jurídica no Brasil.txt Investimentos de RPPS na XP crescem 140% em um ano XP Empresas Valor Econ?mico.txt
国产a网| 在线观看免费视频网站色 | 亚洲AV久久婷婷蜜臀无码不卡 | 麻豆无人区乱码 | 用力C小SAO货奶头都硬了校园 | 五月婷婷六月丁香在线 | 欧美在线观看 cao38 | 久久黄色免费网站 | 人人干国产 | 精品蜜臀AV在线天堂 | 国精品日韩欧美一区二区三区 | 久久精品精品 | 亚洲精品国产成人一区二区 | 免费观看全黄做爰 | 国产精品dvd | 在教室伦流澡到高潮H强圩电影 | 国产精品久久久久久久免费大片 | 永久免费视频 | 日韩亚洲AV无码波多野结衣 | 国产乱码一区二区三区 | 国产大片资源中文字幕 | 91久久精品国产免费一区 | 成年人免费黄色 | 亚洲午夜久久久精品影院视色 | 国产波多野结衣中文在线播放 | 亚洲AV久久无码精品九九九小说 | 深夜国产在线 | 欧美亚洲国产专区在线app | 国产网站黄色 | 国产又色又爽又黄的男女小说免费 | 欧美特黄一区二区三区 | 韩国伦理电影网站 | 国产在线观看香蕉视频 | 翁公的粗大挺进我的密道 | 丁香婷五月 | 看黄网站在线 | 亚洲国产精华液2024 | 2022国产精品自在线拍国产 | 久久99精品久久久久久久野外 | 一级am片欧美 | 鬼父qvod| 最近更新中文字幕完整版视频 | 国产69精品久久久久久人妻精品 | 在线免费看电影 | 韩国久久精品 | 岛国黄色网址 | 久久曹| 欧美bbw极品另类 | 2024亚洲 欧美 国产 日韩 | 无码一区国产欧美在线资源 | 黄色网页在线观看 | 九九视频免费观看 | 国产高清自偷自在线观看 | 污污内射久久一区二区欧美日韩 | 成人午夜免费视频毛片 | 国产人澡人澡澡澡人碰视频 | 国产精品乱码人妻一区二区三区 | 亚洲日韩区在线电影 | 李玲大尺度 | 97色伦图片97色伦图影院久久 | 人妻仑乱A片免费 | 一二三四视频在线播放社区 | 99久久久无码国产精品免费人妻 | 日本后进式猛烈xx00动态图 | 精品一二三区久久AAA片 | 精品日韩一区 | 无码人妻丰满熟妇A片护士电影 | 脱女学小内内摸出水网站免费 | 黄色软件草莓丝瓜秋葵安卓下载破解版大全 | 成人高清网站 | 一本久道综合在线无码 | 成年免费观看黄页网站 | 亚洲 素人 字幕 在线 最新 | 成人在线免费看 | 国产精品久久久久久永久牛牛 | 威龙行动免费观看 | 日韩欧美中文字幕送别 | 日韩激情影院 | 亚洲巨乳巨臀在线一区二区BBW | 泷泽萝拉第一部快播 | 永久免费精品视频 | 女人十八毛片A片久久18 | 激烈娇喘叫床声床震爽文 | 色欲天天天综合网免费 | 日日夜夜噜 | 色女人天堂 | 国产在线观看免费一级 | 99热久久这里只有精品 | 国产人妻人伦精品98 | 熟女乱牛牛视频在线观看 | 欧美激情无码视频一二三 | 男女做爰猛烈啪啪吃奶真人免费 | 国产在线不卡视频 | 真实一级一级一片免费视频 | 深夜做爰性大片中文 | japanese色系free日本 | 爱唯侦察地址发布 | 高清精品国内视频 | 日本在线日本中文字幕日本在线视频播放 | 色中色新址| 宝贝吃吃它就像吸棒棒糖 | 下身被黑人猛然进入 | 久久中文字幕日韩精品 | 东流影院百度影音 | spankchinese国产调教视频 | 成人乱码一区二区三区AV0 | 少妇人妻丰满做爰XXX | 黄色一级片在线免费观看 | 欧美日韩高清一区二区三区 | 久99久爱精品免费观看视频 | 久久人妻熟女一区二区 | 99久久免费国产精精品 | 日本黄页网站免费大全 | 欧美又大粗又黄又爽无码 | 你好湿呀!小妖精快叫 | 好男人资源影院 | 国产日韩欧美三级 | 国产乱码卡二卡三卡4 | 成人动漫久久 | 内射在线CHINESE | 成人福利| 中文字幕熟女人妻偷伦在线视频 | 色欲AV亚洲AV永久精品 | 日韩福利在线观看 | 自拍欧美日韩亚洲动漫 | 天天综合亚洲综合网站 | A片高潮抽搐揉捏奶头视频 A片高潮抽搐揉捏奶头视频在线看 | 我和岳疯狂性做爰全过程 | 手机在线观看网站免费视频 | 黄色片一级免费 | 国产精品一区在线免费观看 | 在线 亚洲 欧美 专区看片 | 香蕉AV久久一区二区三区 | 污污内射久久一区二区欧美日韩 | 日韩欧美中文字幕无码 | 公交车上无耻挖阴 | 久久精品A片20242024 | 越南少妇做受XXX片 雨宫琴音qvod | 成人网免费视频 | 久久国产这里只精品免费 | 丰满人妻中文字幕在线观看 | 中文线码中文高清播放中 | 国产ts人妖| 五月丁香六月综合缴情基地 | www.视频在线观看 | 欧美性逼| 欧美69xxxx| 精品亚洲永久免费精品 | 精品福利视频导航 | 欧亚乱熟女一区二区在线 | 日本aⅴ在线 | 成人v| 十九岁日本电影免费完整版 | 老板揉搓秘书丰满大乳 | 久久久久久久久国产 | 亚洲精品久久午夜麻豆 | 伊人亚洲综合网 | 全员加速中2023免费观看 | 字幕中文字幕 | 无码人妻毛片丰满熟妇区毛片国产 | 日韩高清成人毛片不卡 | 久久六热| 国内精品一卡二卡三卡抖 | 国产www在线观看 | 三级黄色在线免费观看 | 日本黄视频网站 | 在线看va| 国产乱码免费卡1卡二卡3卡四卡 | 韩国高清大片免费观看在线第9集 | 97SE亚洲精品一区 | 精品一区二区三区在线成人 | 女性人体aa欣赏 | 漂亮人妻洗澡被公强欧美精品无码 | 巨大乳女人做爰视频在线 | 亚洲中文字幕乱码熟女在线 | 91传媒蜜桃香蕉在线观看 | 久久久久久一级毛片免费无遮挡 | 国产真实乱子伦清晰对白 | 秋霞精品| 18女下面流水不遮图免费图 | 国产一级一级一级成人毛片 | 内射极品少妇XXXXXHD | 男主是军人的肉肉H | 国产精品久久毛片A片杨颖 国产精品久久人妻互换 | 天天躁夜夜躁 | 中文字幕天堂最新版在线网 | 亚洲午夜无码毛片AV久久小说 | AV每日更新 在线观看 | 国产在线一区二区三区四区 | 秋香蕉丝瓜榴莲污APP下载 | 狠狠躁日日躁夜夜躁A片小说 | 2018国产大陆天天弄 | 狠狠色噜噜狠狠狠狠 | 国产美女一区二区 | 豪妇荡乳1一5杨贵妃 | 亚洲欧美日韩综合影院 | 国产v在线 | 免费看污又色又爽又黄又脏小说 | 亚洲AV久久无码精品九九九小说 | 成人福利在线观看免费视频 | 日韩福利在线 | 雾岛奈津美ed2k | 日日麻批免费视频播放40分钟 | 四虎永久在线观看免费网站网址 | 五月天国产精品 | 99国产午夜精品一区二区 | 播五月综合 | 国产毛多水多做爰爽爽爽 | 伊人影院亚洲 | AV片在线观看免费光看高清 | v天堂中文在线 | 美国一级大黄一片免费的网站 | 久久无码人妻中文国产AV苍井空 | 免费观看碰碰碰视频在线观看 | 国产一区二区三区无码A片 国产一区二区三区乱码在线观看 | 国产成人自产拍免费视频 | 日韩毛片网 | 性一交一乱一伧 | 奇米狠狠一区二区三区 | 亚洲国产精品高清在线一区 | 蝴蝶谷成人论坛 | 国产亚洲精品久久无亚洲 | 滋润岳的性饥渴花落伴官途 | 精品深夜AV无码一区二区老年 | 爱岛国电影网 | 精品国产天堂综合一区在线 | 国产亚洲综合网曝门系列 | 亚洲熟妇毛茸茸 | 国产一区亚洲二区三区毛片 | 舔弄bb| 久久99精品久久久久久久不卡 | 99九九精品国产高清自在线 | 中文字幕国产一区 | 日本免费专区在线观看中破初 | 中文字幕人妻熟女人妻 | 黄色免费网址在线观看 | 亚洲精品偷拍影视在线观看 | 色鬼综合网 | 亚洲薄码区 | 91果冻传媒| 五月婷婷丁香久久 | 在线观看b | 校园春色 qvod | 最近中文字幕MV国语免费下载 | 欧美另类老女人 | 天天插天天爽 | 精品国产免费久久久久久 | 欧美人与动牲交免费看 | 日本aⅴ在线 | 国精产品999一区二区三区有限 | 日本亚洲免费无线码 | 日韩精品免费一区二区 | 热久久久久 | 亚洲永久免费视频 | 快穿之浪荡H啪肉NP文肉BL | 99视频在线观看免费视频 | 熟女AV之人妻熟女 | 六月丁香色婷婷 | 台湾hd性xxx| 美女直播洗澡的软件下载 | 最近韩国日本免费观看免费 | 又大又紧18P少妇在线观看 | 久久精品国产清自在天天线 | 波多野结衣在线一区 | 日韩免费毛片 | 亚洲精品久久久久久中文 | 国产精品色欲AV亚洲三区软件 | 诱人的女邻居9中文观看 | 日本精品无码一区二区三区久久久 | 黄色激情网址 | 我爱灰太狼电影 | 欧欧美18videosex性哦欧美美 | 欧美极品videosvideohd | 天堂俺去俺来也www色官网 | se成人国产精品 | 午夜性啪啪A片免费AAA毛片 | 国产激情视频网站 | 狠狠撸干性图片 | 吉吉影音先锋av资源 | 国产高中生三级视频 | 欧欧美18videosex性哦欧美美 | 国产精品扒开腿做爽爽爽A片 | 真人做爰高潮全过程 | 久久丫精品忘忧草西安品 | 欧美成人一区二区三区在线视频 | 亚洲AV久久久精品麻豆 | 亚洲国产成人一区二区在线 | 国产在线拍揄自揄视精品 | 97香蕉视频| 疯狂做受XXXX高潮吃奶 | 波多野结衣久久一区二区 | 夜夜骑天天干 | 在线看片一区 | 波多野结衣免费在线 | 看三d大片. | 国产一区二区自拍视频 | 国产一级 黄 片 | 永久域名18勿进永久域名3XCC | 很详细的肉肉床文片段 | 特级做A爰片毛片免费69 | 国产在线永久视频 | .精品久久久麻豆国产精品 0855午夜福利伦理电影 | 成年人网站黄色 | 日本一本为道高清视频 | 吉泽明步 bt | 少妇系列之白嫩人妻 | 最近最好看2019年中文字幕 | 午夜精品国产 | 成人福利网址 | 韩国和日本免费不卡在线 | 国产精品福利在线播放 | 亚洲精品久久久久久动漫 | 欧美video巨大粗暴乌克兰 | 日韩黄色中文字幕 | 最新国自产拍短视频 | 老司机福利深夜亚洲入口 | 一区二区中文字幕在线观看 | 99在线视频免费观看视频 | 99久久99久久精品 | 一二三四视频在线播放社区 | 九九天天影视 | 亚洲香蕉网久久综合影院3p | 熟女人妻一区二区三区视频 | 丁香婷婷亚洲 | 一级特黄aa大片欧美网站 | 亚洲毛茸茸 | 97色情在线观看免费高清 | 亚洲久久少妇中文字幕 | 99久久精品国产一区二区成人 | 日本视频a | 国精产品一区一区三区MBA下载 | 欧洲bbbbb | 看看少妇的阳道毛偷拍女浴室 | 久久aa毛片免费播放嗯啊 | 国产在线观看免费观看 | 韩国伦理在线电影免费观影网站 | 国产在线观看91精品 | 九九久久久| 亚洲中文字幕无码一去台湾 | 韩国无码又爽又刺激的A片 韩日午夜在线资源一区二区 | 精品AV国产一区二区三区四区 | 手机在线看片国产 | 又大又粗又爽免费视频A片 又大又爽又硬的曰皮视频 又大又硬又粗再深一点 | 精品免费国产一区二区三区四区 | 日本色影院 | 一个色综合国产色综合 | 亚洲国产精品无码AV久久久 | 强H辣文肉各种姿势np | 强壮公让我夜夜高潮A片视频 | 五月天婷婷缴情五月免费观看 | 91日本在线观看亚洲精品 | 欧美日韩高清不卡免费观看 | 美女免费视频一区二区 | 噜啊噜色在线观看视频 | 久久久久久一品道精品免费看 | 国产精品久久久久无码人妻精品 | 乱熟女高潮一区二区在线 | 色综合网 | 好男人午夜影院 | 免费福利视频导航 | 娇吟水荡浪妇 | 色婷婷成人| 波多野结衣在线高清视频 | 国产下药迷倒白嫩美女在线观看 | 91成人免费在线视频 | 中字幕视频在线永久在线观看免费 | 99精品噜噜噜成人AV | 色翁荡息又大又硬又粗肖艳 | 三级黄色在线免费观看 | 国产人妻无码一区二区三区不卡 | 麻豆AV无码精品一区二区 | 强行进女小姪女小芳 | 免费超级淫片日本高清视频 | 2020年精品国产品在线网站 | 翁熄乩伦小说翁熄性放纵 | 久热这里只精品热在线观看 | 成人高清网 | 天天躁日日2018躁狠狠躁 | 伊人第四色| 古风一女N男到处做高H | 欧美性xxxx极品hdsex | 天堂а√中文最新版地址 | 人人澡人人透人人爽 | 高清在线免费观看完整版电影大全 | 亚洲精品欧美 | 国产九九精品视频 | 日本a级影院 | 日韩在线免费观看视频 | a国产精品 | 黄篇网站在线观看 | 色搜网站| 欧美又大又硬又长又粗A片 欧美又黄又大又爽A片 | 在线观着免费观看国产黄 | 精品无码AV在线观看APP | 国产内射在线激情一区 | 日韩一卡二卡3卡四卡2021高清妈妈的朋友 | 99久久久国产精品免费牛牛四川 | 影视精品网站入口 | 爱操综合| 国产日韩最新系 | 麻豆无人区乱码 | 天天射网| 在线亚洲v日韩v | 色五月最新网址 | 国产精品久久人妻无码网站一区L | 99久久一区二区精品 | 星野亚希 qvod | 中文字幕亚洲乱码熟女在线 | 国产AV人人妻人人爽 | 97视频资源 | 成人高清网站 | 国产超级乱淫视频播放免费 | 第四色网主页 | 黑人操亚洲 | 99国精产品一二三区 | 国产97在线观看 | 亚洲国产成人精品动漫 | 影音先锋av色情撸啊撸 | 色视频免费 | 久久人人澡 | 成年免费大片黄在线观看岛国 | 九九精品免费视频 | 男人午夜天堂 | 忘忧草影院在线www韩国日本 | 高潮无遮挡成人A片在线看 高辣H文黄暴糙汉文H | 六月丁香在线观看 | 无限看片的动漫视频在线观看 | 一个人看的免费观看日本电影 | 天天做天天做天天综合网 | 天天摸天天干天天操 | 91视频18| 欧美一级片在线免费观看 | 蜜臀亚洲AV永久无码精品老司机 | 国产一卡2卡3卡4卡有限公司 | 成人做爰WWW | 九九视频免费观看 | 伦理片在线观看午夜伦理电影三级网 | 一级毛片成人免费看免费不卡 | 经典三级一区二区三区视频 | 国产无码av | 亚洲v天堂| 韩国日本三级在线播放 | 少妇又大又粗又硬啪啪小说 | u影快播 | 免费无码又黄又爽又刺激 | 久久精品99国产精品日本 | 99久久国内精品成人免费 | 日本不卡中文字幕 | 中文字幕免费在线观看 | 国产中文字幕乱码免费 | 天天干夜夜操视频 | 三级欧美日韩 | 在线观看国产精选免费 | 国产午夜精品一区理论片飘花 | 人人爱免费在线观看 | 无限看片的动漫视频在线观看 | 波多野结衣 久久 | 美女视频永久黄网站免费观看 | 大量国产激情视频在线观看 | 婷婷丁香在线观看 | 无码内射成人免费喷射 | 视频二区 中文字幕 欧美 | 天天插天天舔 | 自拍97| 国产成人十八黄网片 | 6080yy亚洲久久无码 | 香蕉人人超人人超碰超国产 | 欧美黑人乱大交灬太大了视频 | 中文字幕精品久久久久人妻红杏1 | 国产精品一级 | 人人射人人舔 | 清晨被舔醒的NP小说 | 国产九九九九九九九A片 | 强被迫伦姧惨叫小说 | 天上人间影院久久国产 | 强硬进入岳A片69色欲VA | 伊人久久丁香色婷婷啪啪 | 久久久无码精品无码国产人妻丝瓜 | 噜噜噜噜私人影院av线观看 | 在线综合 亚洲 欧美 日韩 | 日韩精品午夜视频一区二区三区 | 国产人妻XXXX精品HD电影 | 王伟忠周梦莹最新章节 | 亚洲国产一区二区三区四区色欲 | 亚洲一区不卡视频 | 欧美高清一区二区三区 | 国产香线蕉手机视频在线观看 | 亚洲国产成人久久99精品 | 免费含羞草AV片成人 | 性一交一乱一伦在线播放 | 中国一级全黄的免费观看 | 少妇高潮潮喷到猛进猛出小说 | 91天堂视频 | 97视频 久久久 | 导航福利在线 | 好紧好湿好爽免费视频在线观看 | 婷婷色五月另类综合视频 | 亚洲精品一卡2卡三卡4卡5卡 | 午夜毛片视频高清不卡免费 | 亚洲图片欧美日韩 | 色欧美在线 | YIN荡的老师系列第6部分视频 | 国产乱妇无码大黄AA片 | 泷川雅美的不雅视频 | www.av视频在线观看 | 日韩国产午夜一区二区三区 | AV一区AV久久AV无码 | 一区二区高清视频 | 欧美深夜福利 | 2024最新国产不卡a国内2024 | 国内卡一卡二卡三免费网站 | 国产成人精品曰本亚洲 | 丰满少妇乱A片无码 | 波多野结衣免费视频观看 | 亚洲午夜国产片在线观看 | 亚洲天堂精品视频 | 国产精品久久久久久久毛片 | 欧美成人大色情大片破碎的拥抱 | 在线三级网址 | 亚洲男人天堂岛 | 日本免费网站观看 | 青草社| 日韩A片中文字幕视频免费 日韩MV欧美MV中文无码 | 国产精品蜜臂在线观看 | 亚洲精品无码一二区A片 | 丰满的女邻居在线观看 | 在线成人色情电影网站 | 内射老阿姨1区2区3区4区 | 欧美曰逼| 少妇无码吹潮久久精品AV | 打屁股gay| GAY高潮痉挛哭叫失禁男小说 | 亚洲 欧美 字幕 一区 在线 | 光根电影院理论片午夜 | 亚洲午夜视频 | 小蝌蚪视频app无限看 - 丝瓜ios视频丝瓜视 | 快播色网址大全 | 亚洲最大色情网55101 | 国产黄色片91| 狠狠操夜夜操 | 精品一区二区三区免费观看 | 欧美成人亚洲国产精品 | 韩国一区二区视频 | 韩国理伦片一区二区三区在线播放 | 国产黄色a三级三级三级 | AV天堂午夜精品一区二区三区 | avav在线精品 | 人妻AV久久一区波多野结衣 | 鲁在线| 影音先锋中文AV资源网 | 国产精品视频在这里有精品 | 又粗又硬女人免费视频 | 国产亚洲产品影市在线产品 | 最新精品视频2019在线视频 | 国产的一级毛片最新在线直播 | 免费在线观看黄色网址 | AV天堂午夜精品一区二区三区 | 日韩美女免费视频 | 种地吧少年第一季 | 欧美久久久久久 | 久久天堂视频 | 天堂国产在线观看 | 成人免费影 | 亚洲黄色免费网址 | 2019久久久高清456 | 第一次破處在线国语视频播放 | 亚洲中文无码永久免费 | 波多野结衣hd系列在线播放 | 国产人妻人伦又粗又大爽歪歪 | 91一区二区午夜免费福利网站 | 国产资源在线观看 | 激烈娇喘叫床声床震爽文 | 乱人伦小说500篇目录 | 丝袜亚洲另类欧美变态 | 国产专区_爽死777 | 忘忧草日本在线WWW日本 | 亚洲欧美偷拍视频一区 | 岛国大片在线播放高清 | 最近最新的日本免费 | 乱熟女高潮一区二区在线 | 63jjj全国最大| 黄色三级免费观看 | 亚洲第色情一区二区 | 99精品国产成人一区二区 | 综合色情 | 伊人久在线观看视频 | 欧美啪啪精品 | 少妇做爰又色又紧夜视频 | 男污女XO猛烈的动态图 | 免费一级毛片能看的 | 免费AA片少妇人AA片直播 | 国产伊人久久 | 黄页视频免费在线观看 | 艳妇臀荡乳欲伦交换AV1 | 免费在线不卡视频 | 欧美精品一区二区蜜臀亚洲 | 国产在线观看www鲁啊鲁免费 | 亚洲精品又粗又大又爽A片 亚洲精品一区无码A片 | 亚洲精品久久久久久久蜜桃 | 天美传媒 高清 | 亚洲国产在线精品国 | 久久久97丨国产人妻熟女 | 国产亚洲精品97在线视频一 | 亚洲欧美久久久久久久久久爽 | 97免费观看视频 | 亚洲 偷拍 色播 | 性欧美极品另类 | 色综合天天 | 日本h视频 | 亚洲国产成人资源在线软件 | 亚洲精品国产一区二区三 | 亚洲高清免费在线观看 | 日韩精品成人 | 欧美人与物videos另类 | 精品美女国产互换人妻 | 亚精产品一三三三菠萝蜜 | 九九视频精品36线视频在线观看 | 国产精品69福利视频 | 国产熟妇精品伦一区二区三区 | 美美哒免费高清影院在线观看直播 | 精品国产成人AV在线看 | 亚洲精品久久国产高清小说 | 永久黄网站色视频免费观看 | 精品一区二区三区影片 | 欧美视频在线观在线看 | 色欲AV亚洲A片永久无码精品 | 校园H所有人随时随地做 | 日本h视频 | 最近中文字幕手机大全 | 国产精品视频一区牛牛视频 | 他的舌头弄得我爽水好多 | 免费精品美女久久久久久久久 | 全黄H全肉边做边吃奶NP | 国产一国产看免费高清片 | 欧美一区二区三区不卡 | 国产亚洲毛片在线 | 久久久无码精品亚洲A片0000 | 美国毛片免费一级 | 欧美老熟妇又粗又大 | 在线免费看黄网站 | 亚洲欧美日韩中文字幕在线不卡 | 小荡货好紧好爽奶头好大视频网站 | 99国产在线播放 | 好看的日本电影 | 午夜生活片 | 希岛爱理aⅴ在线中文字幕 西方毛片 | 日韩无人区码卡二卡3卡4卡介绍 | 帝王被大臣们调教高肉 | 日本无吗无卡v清免费网站 日本午夜成年在线网站 | 日韩小视频在线播放 | 国产黄色在线播放 | 完美世界动漫在线视频免费观看 | 国产午睡沙发系列大全 | 青青热久久国产久精品 | 久久综合九色综合桃花 | 开心色播电影 | 青青自拍视频一区二区三区 | 亚洲精品久久久无码AV片软件 | 久久精品国产色欲A片小说 久久精品国产亚洲AV麻豆 | 在线看a片| 女人被躁到高潮免费视频 | A级毛片内射免费视频 | 坐在校草身上摩擦H | 99热这里只有精品免费国产 | 一女N男巨物撞入NP纯肉 | 国产日本高清免费视频在线观看 | 色婷婷国产熟妇人妻露脸AV | 国产农村熟妇videos | 欧美一级黄色片 | 美女扒开尿道让男人捅 | 波多野结衣中文视频 | 日本一本在线播放 | 天天操天天干天天摸 | 国产AV无码免费一区二区 | 亚洲精品午睡沙发系列 | 日日摸天天碰中文字幕 | 九九热视频精品在线观看 | 欧美videos巨大hd | 天天躁狠狠躁 | 狼人综合网| 91天堂| 看片免费所有网站 | 亚洲 欧美 影音先锋 | 国产成人毛片毛片久久网 | 亚洲区偷拍自拍29P 亚洲人成77777A片张津瑜 | 国产一区日韩二区欧美三区 | 国产99er66在线视频 | 亚洲一区二区在线播放 | 免费视频在线观看网站 | 97色伦图片97综合影院久久 | 一道本在线观看视频 | 欧美性视频一区二区三区 | 国产片MV在线观看 | 亚洲午夜无码毛片AV久久久久久 | ACG里番全彩侵犯本子色情福利 | 爱综合网 | 在线免费观看精品 | 最近免费视频中文字幕2018完整版 | 欧美三级视频在线观看 | 朋友的人妻的滋味BD中文 | 激情无码人妻又粗又大又硬 | 亚洲精品久久无码AV片亚洲 | 欧美精品高清无码 | 91久久国产综合精品 | 99视频国产精品免费观看app | 一本本月无码- | 色播影院性播免费看 | 天天操天天射天天 | 色情污污污WWW网站下载 | 国产成人精品久久一区二区三区 | 一日本道不卡高清a无码 | av线上免费观看 | 99久久国产免费中文无字幕 | 精品久久日产国产一二三区 | 亚洲高清在线视频 | 色爽黄1000部免费软件下载 | 99je全部都是精品视频在线 | 狠狠色噜噜狠狠狠狠色综合网 | 日本视频免费 | 欧美成人精品第一区二区三区 | 成人黄色在线免费观看 | 丁香色综合 | 开心网四房播播 | 亚洲第一伊人 | 亚洲免费一区二区 | 亚洲成人黄色在线 | 免费大片黄在线观看视频 | 琪琪电影网伦理片韩国 | 免费看www网站入口 免费看v片 | 久久99这里只精品热在线 | 色撸在线视频 | 国产无遮挡成人免费视频网站 | xxxx 日本孕妇xx孕交 | 全球金属网| 亚洲 日韩 国产 制服 在线 | 国产精品无码一区二区在线A片 | 高清有码国产一区二区 | 守寡的岳引诱我岳潮湿的肥厚 | 国产精品系列在线观看 | 日韩免费一级毛片 | 色欲AV亚洲午夜精品无码电影 | 国产WW高清大片免费看 | 婷婷开心色 | 四虎影库久免费视频 | 色视频在线观看网站 | 91九色视频在线观看 | 亚洲日韩国产精品乱-久 | 亚洲图片偷拍图自拍97 | 亚洲宗合| 欧美激情16p| 成人国产精品一级毛片视频 | 波多野结衣hd在线播放 | 欧美精品乱码99久久蜜桃 | 国产精品自在在线午夜区app | 日本少妇按摩做爰2 | 亚洲va在线va天堂成人 | 色老头色老太aaabbb | 福利91| 日韩免费A片奶头 | 99视频30精品视频在线观看23245 99视频免视看 | 边做边爱完整版免费视频播放视频 | 国产精品网站在线观看免费传媒 | 第四色亚洲| 日本一区二区三区免费A片 日本一区色情无码视频在线观看 | 国产WW高清大片免费看 | 丰满少妇夜夜爽爽高潮水 | 久久99国产精品久久99小说 | 亚洲一区自拍 | 国产色精品久久人妻无码 | 第七色男人天堂 | 在线视频久久只有精品 | 91久久婷婷| 性做久久久久久蜜桃花 | 三级a毛片| 黄网站视频在线观看 | 99ri在线视频| 用力C小SAO货奶头都硬了校园 | 日韩在线一区二区三区 | 校园H所有人随时随地做 | 2018高清国产一区二区三区 | 在线97| 热99re久久国超精品首页 | 日韩精品视频在线播放 | 老师你下面好紧夹死了 | 亚洲欧美中文日韩v在线 | 黄页网站视频在线观看 | 亚洲一区二区三区高清网 | 最近的2024中文字幕国语版 小说 | 欧美国产一区二区三区激情无套 | 丁香花在线影院观看在线播放 | 在线观看亚洲欧美视频免费 | 久久国产一久久高清 | 国产裸舞福利在线视频合集 | 欧美一级片免费观看 | 阿v天堂2018在无码 | 久久午夜一区二区 | 免费羞羞午夜爽爽爽视频 | 快播泷泽萝拉 | 九九精品免视频国产成人 |