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

zrardmh

10 Oct 2025(atualizado 10/10/2025 às 01h29)

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

Temas

Compartilhe

BBC Travel Destinations Australia and Pacific.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 lotofácil concurso 1308its 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

_Kryvyi_Rih_Analysing_Russian_strike_on_Ukraine_hotel.txt

BBC_Audio_6_Minute_English.txt explorar e os conhecimento moda.

GRáFICOS

nos eixos

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

BBC_Audio_606_Brighton_rock_Manchester_City_and_Szoboszlai_strike_sinks_Arsenal_at_Anfield.txt lazer e os ponto quente ponto quente.

Navegue por temas

BBC_Audio_Believe_in_Magic_Episode_7_Jean.txt BBC_Audio_A_Very_British_Cult.txt BBC_Audio_606_Man_United_grab_the_points_Spurs_stutter_amp_no_Newcastle_nine.txt BBC_Audio_Black_Gold.txt BBC_Audio_BBC_Radio_Scotland_Rugby_Podcast_John_Jeffrey_hurt_bitter_and_betrayed_by_Scottish_Rugby.txt BBC Sport spends a week at the Greenlandic Football Championship - BBC Sport.txt BBC_Audio_A_Thorough_Examination_with_Drs_Chris_and_Xand.txt BBC_Audio_Americast.txt BBC Sport - Scores, Fixtures, News - Live Sport.txt BBC_Audio_606_The_day_of_the_killer_Bs.txt
2018国产大陆天天弄 | 欧美视频第一页 | 久久国产乱子伦精品免费M 久久国产伦子伦精品 | 三级毛片黄色 | 免免费国产AAAAA片 | 最近免费中文字幕高清大全 | 香蕉AV亚洲精品一区二区 | 亚洲精品鲁一鲁一区二区三区 | 天天做天天射 | 一个人看的在线www高清视频 | 日韩一品道 | 免费高清资源黄网站在线观看 | 天堂√在线官网 | 日日噜噜夜夜狠狠va视频 | 精品国产乱码久久久久久下载 | 成年在线人免费视频视频 | 久久久WWW成人免费精品 | 清冷将军被C把腿张开NP产 | 性色AV乱码一区二区三区 | 国产AV无码专区亚洲AV久久 | 欧亚乱色熟一区二区三四区 | 日本一本二本无码免费视频 | 啊灬啊灬啊灬快灬A片免费直拍 | 日本高清视频在线 | 在线欧美一区 | 四虎库影必出精品8848 | 自拍视频在线观看完整版 | 天美传媒影视在线网址 | 日韩免费毛片 | 99re6在线观看 | 日本三级电影在线观看 | 国产精品久久福利新婚之夜 | 欧美ZC00O人与善交 | 四川丰满护士毛茸茸 | 日本护士高清xxxxx | 欧美日韩视频在线成人 | 丰满人妻妇伦又伦精品APP国产 | 亚洲电影天堂av2017 | 2019天天操夜夜操 | 日韩国产一区二区三区四区五区 | 乱肉杂交怀孕系列小说BL | 免费视频国产在线观看网站 | 午夜福利理论片高清在线 | 黄页视频免费观看 | 国产亚洲欧美日韩综合综合二区 | 中国久久 | 国产精品一区高清在线观看 | 日韩色情图片小说AV一区 | 国语普通话对白CHINESE | 中国人xxxxbbbb国产 | 国产亚洲综合成人91精品 | 免费的好黄的漫画 | 永久午夜福利视频一区在线观看 | 99国产在线精品观看二区 | 国内一本到不卡在线观看 | 老师没戴套子C了我一天视频 | 最近最新高清中文字幕MV在线 | 又污又黄又无遮挡网站 | 色欲AV亚洲精品一区二区 | 国产精品岛国久久久久 | 色天使亚洲 | 网站在线| 天堂√在线中文资源网 | 国色天香在线播放社区 | 狠狠撸 撸你喜欢 | 日日摸夜夜添夜夜添A片一Y | 在线观看国产日韩 | 亚洲国产区男人本色在线观看 | 国产麻豆91网在线看 | 一级生活毛片 | 欧美videos巨大hd | 午夜精品A片一区二区三区 午夜激情在线观看 | 中文字幕日本一区 | 亚洲va在线va天堂va手机 | 成人超级碰碰免费视频 | 打开腿闺蜜用黄瓜让我爽 | 亚洲精品久久久无码 | 国产亚洲精品在浅麻豆 | 亚洲不卡影院 | 欧洲午夜福利视频在线观看 | 香港三级韩国三级日本三级 | 波多野结衣教师中文字幕 | 操综合网| 被群CAO的合不拢腿H小说 | 日本A级做爰午夜免费视频 日本A片成人片免费视频生活片 | 日本a级片视频 | 中文字幕第一区 | 狠狠撸电影 | a久久99精品久久久久久不 | 99re这里| 国内精品一卡二卡三卡抖 | 亚 洲 视 频 高 清 无 码 | 日日天干夜夜狠狠爱 | 欧美国产一区二区三区激情无套 | 娇妻的呻吟梦颖完整版 | 龙之心4:心火之战 | 欧美精品第欧美第12页 | 精品中文字幕一区在线 | 少妇粉嫩小泬白浆流出 | 四川W搡BBB搡WBBB搡 | 国产亚洲精品久久久久久老妇 | 黄色国产在线观看 | 久99久精品视频免费观看v | 狼狼躁日日躁夜夜躁A片 | 性加拿大高清xxxxx | 中文人妻AV久久人妻水 | 在线综合亚洲中文精品 | 日本电影推荐 | 国产操穴| 亚洲 欧美 日韩 国产 视频 | 周妍希国产福利在线观看 | 18以下勿进色禁网站永久视频 | 少妇大叫太大太粗太爽了A片在线 | 91最新在线播放 | 久久久久国产精品免费网站 | 欧美性生交片4 | 丁香五月天综合缴情网 | 日本特黄无码毛片在线看 | 97精品国产 | 视频一区欧美 | www.日本com| 久久久久久久一精品 | 岛国在线无码高清视频 | 极品夜夜嗨久久精品17c | 久热精品在线视频 | 少妇爽滑高潮几次 | A片扒开双腿进入做视频 | 中文字幕天堂中文 | 免费看欧美特黄久久毛片久久 | 欧美性猛交一区二区三区精品 | 激情五月黄色 | 欧美日韩亚洲二区在线 | 又爽又色又舒服A片免费 | 亚洲AV久久无码精品九九软件 | 国精品人妻无码一区二区三区一 | 波多野结衣在线观看一区 | 浙江乱子伦对白 | 99国产精品久久久久久久日本竹 | 日本一道高清视频1区 | 在线视频 日韩 | 女人张开腿让男人桶免费网站 | 久久99久久精品久久久久久 | 欧美日韩精品一区二区 | 91网站免费观看 | 樱花树下未删减免费观看 | 中文字幕在线观看91 | 18出禁止看的啪视频网站 | 亚洲娇小性xxxx | 狠狠躁日日躁夜夜躁A片小说免费 | 曰本人做爰又黄又粗视频 | 国产麻豆一精品AV一免费软件 | 中文字幕乱码熟女人妻水蜜桃 | 曰韩无码AV久久久免费 | 欧美日韩不卡中文字幕在线 | 日本福利在线观看 | 日韩福利在线观看 | 久久国产精品人妻无码 | 玖玖成人 | 日韩国产成人无码AV毛片蜜柚 | 四虎影院免费观看 | 久re这里只有精品最新地址 | 国产极品美女视频福利 | 91福利视频免费观看 | 中文字幕色视频 | 亚洲成色A片202477在线小说 | 色天天综合网 | 国产日本高清免费视频在线观看 | 欧美精品一区二区三区四区 | 天天舔天天爽 | 午夜黄色福利视频 | 久久精品视频在这里16 | 久久免费视频在线观看6 | 日本一区二区三区不卡在线看 | 综合色桃花久久亚洲 | 亚洲一级毛片免观看 | 免费国产成人高清在线观看网站 | 欧美精品一区二区三区在线播放 | 国产电影一区二区三曲爱妃记 | 性色欲情网站IWWW | 夜色撩人在线视频 | 欧美日韩久久久精品A片 | 激情六月丁香婷婷四房播 | 日韩欧美高清一区 | 免费在线黄网 | 日本一区视频 | 天天拍夜夜拍高清视频 | 亚洲综合香蕉 | 久久亚洲精品高潮综合色A片小说 | 91香蕉视频在线 | 色情成人免费视频激情在线观看 | 波多野结衣办公室在线 | 久久久久久久久影院 | 日本A片色情AAA片WWW | 双性精跪趴灌满h室友4p | 成熟妇女免费看A片视频 | 国精产品三区四区有限公司 | 宅男噜噜66 | 又大又黄又爽免费看A片 | 亚洲国产女人aaa毛片在线 | 你懂的福利视频 | 少妇毛又多又黑A片欧美 | 免费毛片网站在线观看 | 午夜视频国产 | 日本一本二本无码免费视频 | 丁香婷婷在线 | 色中色 最新地址 | 六月丁香伊人 | 99九九精品国产高清自在线 | 91精品国产免费青青碰在线观看 | 九九精品视频在线观看九九 | 欧洲无人区码SUV | 在线观看成人网 | 国精产品一区二区三区有限公司 | 中文字幕你懂的 | 天天操天天干天天插 | 国产最新一区二区三区天堂 | 精品一区二区三区四区五区六区 | 麻豆视频传媒入口 | 欧美一区二区三区免费看 | 日本无码人妻一区二区免 | 免费观看黄A片在线观看 | 亚洲日本欧美日韩高观看 | 欧洲精品色 | 欧美激情社区 | 成人全黄三级视频在线观看 | 中文字幕一区二区三区在线播放 | 日本三级香港三级久久99 | 亚洲欧美国产日本 | 天天操夜夜操视频 | 女人张开腿让男人桶爽的 | 国产一区二区三区不卡在线观看 | 国产人妻人伦AV又粗又一长 | 色欲狠狠躁天天躁无码中文字幕 | 国产免费A片在线观看人 | CHINESE性内射高清国产 | 四虎最近网站是多少 | 精品一卡2卡三卡4卡乱码精品视频 | a免费网站 | 天天色亚洲 | 秋霞成人午夜鲁丝一区二区三区 | 免费又粗又黄又爽又免费A片 | 亚洲春黄在线观看 | 99视频这里只有精品国产 | 无码人妻少妇色欲AV一区二区 | 欧美中文字幕在线视频 | 欧美亚洲熟妇一区二区三区 | 午夜高清视频 | 男女羞羞无遮掩视频免费网站 | 4虎最新| 闺蜜把春药放进我下面那个 | 日韩欧美群交P片內射中文 日韩欧美中 | 日韩精品免费一区二区 | 国产黄色免费在线观看 | 麻豆艾秋| 日本无码黄人妻一区二区 | 久久99精国产一区二区三区四区 | 总攻高H巨肉各种PLAY快穿 | 国亚洲欧美日韩精品 | 羞羞影院午夜男女爽爽影院网站 | 久久大香伊蕉在人线国产昨爱 | 欧美激情视频在线观看一区二区三区 | 日本爆乳无码一区二区漫画 | 精品人妻无码一区二区三区蜜桃一 | 免费看黄色毛片 | 最近中文字幕完整在线看一 | 手机黄色 | 日本精品中文字幕有码 | 肉小说污肉 | 精品国产一区二区三区不卡 | 亚洲日本无码精品无码白石麻衣 | 迷你世界皮肤兑换码永久 | 亚洲国产青草 | 国产第6页 | 美女后入式xoxo动态图 | 黄色片网站在线观看 | 国产精品亚洲二线在线播放 | 小黄文纯肉污到你湿 | 免费特黄一区二区三区视频一 | 亚洲三级高清免费 | 99je全部都是精品视频在线 | 亚洲精品国偷拍自产在线观看蜜臀 | 五月天婷婷网亚洲综合在线 | 亚洲免费影视 | 上床网址 | 国产免费AV吧在线观看 | 人成乱码一卡二卡三四卡无卡六卡 | 亚洲精品乱码久久久久蜜桃 | 免费国产黄线在线观看视频 | 丁香婷婷在线观看 | 毛片三级 | 亚洲人成无码久久久AAA片 | 国产xxxx| 国产 亚洲 中文字幕 在线 | 国产成人精品一区二区免费 | 在线观看动漫 | 网www天堂资源在线 王者荣耀最新更新公告 | 日本jzjzjz大全 | 欧美一级片免费观看 | 欧美又大又粗又爽无码视频 | 苍井空大尺寸视频大全 | 美女18禁永久免费观看网站 | 日本久久久久久久 | 91精品久久久久久久99蜜桃 | 91福利视频导航 | www.国产精品.com | 麻花传媒沈芯语老师视频 | 天堂网在线观看视频 | 色情成人影院欧美激情 | 一个人看的视频WWW高清免费 | 国精一区二区AV在线观看网站 | 亚洲AV久久无码精品九号软件 | 日本免费久久久久久久网站 | 狠狠色噜噜狠狠狠888米奇 | 亚洲色无码A片一区二区麻豆 | 成人黄18免费视频 | 丝袜偷窥亚洲综合 | 五月婷婷综合在线 | 国产在线观看91精品 | 91网站在线播放 | 天天干天天操天天插 | 最新无码国产在线视频9299 | 裸体BBBBBBBBB| 内射女校花一区二区三区 | 三级网站在线 | 在线观看黄片 | 欧美xxxx精品另类 | 国产毛片女人高潮叫声 | 四虎影视最新2024在线观看 | 亚洲三级小视频 | 91精品人成在线观看 | 婷婷激情五月 | 亚洲三级黄色 | 国产丰满人妻一区二区电影 | 黄色免费小网站 | 另类 校园 人妻 武侠 | 国产伦亲子伦亲子视频观看 | 美日韩一级 | 公和我乱爽死我A片 | 亚洲视频一区在线观看 | 老师你下面太紧进不去小黄文 | 欧美性久久| 欧美午夜精品久久久久久浪潮 | 成人人观看的免费毛片 | 色视频免费网站 | 一区二区三区波多野结衣 | 一级毛片在线直接观看 | 亚洲色欲色欲综合网站 | 日韩精品一区二区三区国语自制 | 张开腿我尝尝你的草莓 | 性生交大免费看 | 蜜臀AV中文字幕熟女人妻 | 色婷婷激情 | 青青草久热精品视频在线观看 | 久久99国产麻豆一区二区三区 | 国产一卡2卡3卡4卡无卡国色 | 天天干天天谢 | 男人J放进女人P全黄网站 | 亚洲精品无码AAAAAA片 | 免费看欧美特黄久久毛片久久 | 日韩色影院 | 亚州色区 | 日日噜噜夜夜狠视频免费 | 久久久久久久久久久久福利 | 欧美一区二区视频在线观看 | 91国在线国内在线播放 | 在线观看播放理论片 | 狠狠色噜噜狠狠狠888米奇 | 丁香花成人论坛 | 国产精品第3页 | 午夜福利国产在线观看1 | 亚洲v日本v欧美v综合v | 春日野结衣在线视频 | 亚洲精品国产一区二区三 | 理论片午午伦夜理片I | 求欧美精品网址 | 九九九精品午夜在线观看 | 毛片免| 国产日韩精品一区二区三区在线 | A片高潮抽搐揉捏奶头视频在线看 | 中文字幕无码人妻AAA片 | 日产精品一二三四区气温 | BL文库好大粗黑强强肉NP | 国产毛片一级 | 深夜福利日韩 | 美女扒开腿让男生桶爽免费APP | 国产成人精品18 | 中文字幕无码A片久久 | 二级片免费看 | 全黄H全肉短篇n男男 | 欧美亚洲国产精品久久 | 成人午夜在线视频 | 亚洲国产精品日韩一线满 | JIZJIZJIZ 日本老师水多 | 看黄网站在线 | 亚洲精品国产乱码AV在线观看 | 久久精品国产精品亚洲蜜月 | 国产乱妇乱子在线视频 | 亚洲入口| 精品久久一 | 欧美丰满大乳无码少妇 | 亚洲色爽视频在线观看 | 久久草在线精品视频99 | 最近中文字幕完整在线看一 | 在线播放91撕破艺校舞蹈系 | 天天干天天玩天天操 | 亚洲欧洲日产国无高清码图片 | 91精品专区 | 亚洲一区黄色 | 91极品尤物 | 亚洲色综合狠狠综合区 | 成人网zhan | 亚洲电影 欧美电影 | 日本无码人妻丰满熟妇A片 日本无码人妻丰满熟妇5G影院 | 国产偷抇久久精品A片蜜臀AV | 丁香花在线观看免费观看图片 | 色网址| 伊人网综合在线视频 | 高h全肉纯肉 高质量 | 国产色无码精品视频国产 | 色情.WWW成人天堂 | 黑人又大又粗又硬XXXXX动态图 | 免费在线观看一区 | 一本久久综合亚洲鲁鲁五月天 | 日本亚洲精品无码专区国产 | 成熟YIN荡美妞A片视频麻豆 | 中文字幕天堂最新版在线网 | 九一九色国产 | 综合激情区视频一区视频二区 | 美女扒开胸罩露出奶头的动态图片 | 国产精品国产三级国产普通 | 全球金属网 | 没有废话全色肉的黄文 | 久久久综合网 | 国产在线a免费观看 | 无限资源在线视频完整版观看 | 国产亚洲综合一区二区在线 | 宝贝舒服吗好紧好多水小说 | 欧美91精品久久久久网免费 | 色婷婷久 | 欧亚美性色欧美性A片 | JLZZJLZZ亚洲乱熟在线播放 | 色综久久| 国产精品视频自拍 | 中文字幕精品视频在线观看 | 国产玩弄放荡人妇系列 | 日本一道人妻无码一区在线 | 日韩一区二区在线观看视频 | 色播欧美 | 精品无码国产AV一区二区三区 | 成人小视频在线观看 | 国产人妻大保健私密推油按摩无码 | 高h禁伦没羞没躁 | 欧美 国产 亚洲 卡通 综合 | 无码国产一区二区三区四区 | yin乱大合集| 精品无码国产AV一区二区三区 | 国产特黄特色a级在线视频 国产素人自拍 | 在线 国产 有码 亚洲 欧美 | 久久久网久久久久合久久久久 | 亚洲一区AV在线观看红楼梦 | 69精品国产久热在线观看 | 色偷偷亚洲第一成人综合网址 | 囯产精品一区二区三区线 | 最近新韩国日本免费观看 | 老头把我添高潮了A片故 | 国产小视频免费在线观看 | 天天曰天天干 | 亚洲视频一 | 日韩欧美一区二区三区不卡在线 | 亚洲国产精品无码中文在线 | 国产精品夜夜春夜夜爽久久小 | 波多野结衣在线高清视频 | 色美妞 | 中日韩精品卡一卡二卡3卡 中日文字字幕乱码视频 | 色欲人妻AV久久无码精品 | 久久受www免费人成_看片中文 | 久久天天综合 | 91免费精品国自产拍在线不卡 | 欧美可以直接看的A片 | 拍戏时滑进去了 H爽文 | 长篇YIN荡乱合集小说免费TXT下载 | 在线视频精品一区 | 国产精品美女久久久久AV超清 | 午夜福利1000集无码 | 在线天堂资源www中文在线 | 亚洲区欧美区 | 好男人社区神马在线观看WWW | 性欧美大战久久久久久久野外黑人 | 亚洲精品蜜桃AV久久久 | 草 榴 2020最新地址T66Y | 古代级a毛片免费观看 | 99re6在线| 男女做爰猛烈啪啪吃奶动A 男人j进女人j的图片 | 国产乱码人妻一区二区三区 | 国产精品系列在线一区 | 2020国产成人久久精品 | 成人5252色| 日本午夜大片 | 午夜影院视费x看 | 免费精品国偷自产在线读大二 | 级毛片久久久毛片精品毛片 | 免费看国产曰批40分钟 | 伊思人在线 | 男人扒开女人腿桶免费视频 | 欧美性生交BBBXXXXX无码 | 日日碰狠狠躁久久躁96AVV | 老湿机免费体十分钟 | 国产成人一区二区三区影院动漫 | 在线一区二区三区 | 亚洲 日韩 国产 制服 在线 | 亚洲欧美中文无码蝴蝶 | 青青草a免费线看 | 国产69精品久久久久乱码韩国 | 亚洲精品一区二区三区新线路 | 真钱牛牛 pt88.vip | 亚洲色贴图 | jizz在线观看免费高清 | 国产乱码精品一区二区三区香蕉 | 日韩A片无码毛片免费看久久 | 日本毛片爽看免费视频 | 老司机午夜剧场 | 女人18毛片a级毛片一区二区 | 日本高清一二三区视频在线 | 日本亚欧热亚洲乱色视频 | 西西人体大尺度nte 西西人体大胆牲交PP6777 | 网站午夜 | 国产一级二级 | 2024免费视频真人直播 | 国产成人无精品久久久久国语 | 99精品无人区乱码在线观看 | 国产成人精品福利网站人 | 日本成熟视频免费视频 | 日本一区二区三区免费看 | 高清国产精品久久久久 | 精品熟女少妇AV久久免费软件 | 国产成人精品久久免费动漫 | 婷婷中文字幕 | 亚洲日本香蕉视频观看视频 | 黄色在线播 | 综合区亚一洲线观看免费 | 久久国产网 | 国产精品大全 | 狠狠色噜噜狠狠狠狠狠色综合久久 | 国产特级毛片AAAAAAA高清 | 成年片色情大免费网站 | WWW国产亚洲精品久久小说 | 操屁股| 麻豆视传媒免费版 | 国产三级影院 | 九九热视频免费 | 狠狠色婷婷狠狠狠亚洲综合 | 高h喷水荡肉爽文n | 麻豆 一区 精品 在线 | 777四色| 国产精品一区二区精品视频导航 | 被教官按在寝室狂到腿软视频 | 亚洲国产高清精品线久久 | 四虎8848| 国内自拍视频一区二区三区 | 2018天天干天天操 | 丁香六月激情 | 2024琪琪午夜理论电影网 | 久久精品这里是免费国产 | 国产高清一级毛片在线不卡 | 国产一区免费在线观看 | 精品国产网 | 99国产成人精品2021 | 美女视频永久黄网站免费观看 | aa级毛片毛片免费观看久 | 在线看片av以及毛片 | 免费电| 国产成人午夜精品免费视频 | 亚洲乱码精品久久久久.. | 欧美成年免费a级 | 成年福利片在线观看 | 全部免费的毛片视频观看 | www黄色免费| 国产精品人妻一码二码 | 色情无码永久免费视频网站APP | 日本熟妇毛茸茸xxxxx | 最近中文字幕免费视频 | 公与妇仑乱HD | 日本欧美国产 | 日韩欧美一区二区三区在线 | 国产成人亚洲综合91精品555 | 日韩视频在线播放 | 最新三级网站 | 欧美成人无码视频午夜福利 | 国产高清免费不卡观看 | 视频列表--国产 | 91精品国产高清久久久久久 | 亚洲国产激情一区二区三区 | 成人性生交A片免费观看 | 91久久精品国产亚洲 | 大片在线播放 | 国产精品久久福利新婚之夜 | 亚洲综合激情六月婷婷在线观看 | 欧美成人se01短视频在线看 | 久热国产在线视频 | 午夜影院费试看黄 | 国产一级黄色网 | 97日日碰人人模人人澡 | 一进一出男女啪啪120秒试看 | 欧美性爱 综合 | 亚洲国产在线资源网 | 又大又硬又粗做大爽A片 | 国产一级一片免费播放i | 日韩精品无码一区二区免费A片 | 亚洲一区二区三区无码中文A片 | 拍拍拍无遮挡高清视频在线网站 | 久久黄色免费电影 | 国产欧美日韩另类精彩视频 | 国产在线一区视频 | 精品麻豆一区二区三区乱码 | 日韩欧美二区在线观看 | 三龙一凤H啪肉Np文 三男一女伦奷A片 | 美女露100%全身无遮挡 | 成熟妇女A片高潮免费看 | 婷婷国产成人精品视频小说 | 在线播放真实国产乱子伦 | 欧美第一视频 | 99精品国产免费观看视频 | 国产精品色情国产三级小说 | 激情五月深爱五月 | 客厅乱H伦亲女小说 | 男人午夜影院 | 天天综合天天综合 | 越猛烈欧美xx00动态图免费 | 日韩欧美中文字幕无码 | 久久视频这里只精品99 | 三级毛片黄色 | 亚洲精品国产v片在线观看 亚洲精品高清国产一线久久97 | 真人做爰高潮全过程 | 狠狠色网| 激情内射亚州一区二区三区爱妻 | 黑人粗长大战亚洲女 | 水中色av综合 | 欧美日韩国产亚洲一区二区 | 亚欧日韩毛片在线看免费网站 | 国产精品久久久久9999 | 永久免费精品精品永久-夜色 | 国产成人片 | 亚洲欭美日韩颜射在线二 | 涩涩鲁亚洲精品一区二区 | 久久国产精品免费观看 | 亚洲美女久久 | 日b视频免费 | 久久只这里是精品66 | 可以看三级的网站 | 免费国产美女爽到喷出水来视频 | 一级毛片完整版免费播放一区 | 亚洲国产激情一区二区三区 | 国产三级精品三级国产 | 两性午夜欧美高清做性 | 小荡货好紧好爽奶头好大视频网站 | 国产欧美综合在线观看第七页 | 日本一品道无码免费专区在线观看 | 91果冻传媒 | 斯大林格勒战役免费高清观看 | 欧美性爱 成人 | 最爽乱小说录目伦小说 | 香蕉视频久久 | 希岛爱理aⅴ在线中文字幕 西方毛片 | 欧美交性性 | 成人a毛片久久免费播放 | 亚洲美女视频高清在线看 | 欧美久久亚洲精品 | 花房姑娘HD版在线观看 | 久久人人玩人妻潮喷内射人人 | 92电影网午夜福利 | 天天干天天天天 | 日韩首页 | 国产午夜精品美女视频在线 | 日韩毛片免费线上观看 | 婷婷综合在线 | 久久99精品久久久久久秒播 | 精品亚洲永久免费精品 | 女网址www女视频 | 国语自产拍在线观看偷拍 | 第一福利视频导航 | 日日摸天天碰中文字幕你懂的 | 日韩色中色 | 91视频3p | 女人18毛片A片久久18软件 | 窝窝在线视频 | 中文字幕国产在线 | 午夜网站在线观看免费网址免费 | 国产精品涩涩涩视频网站 | 亚洲怡红院频在线视频 | 欧洲精品不卡1卡2卡三卡 | 日产精品一二三四区气温 | 大陆人妻熟妇多毛A片 | 狠狠色噜噜狠狠狠狠黑人 | 午夜精品久久久久久99热 | 肥老熟妇伦子伦456视频 | 国产妇少水多毛多高潮A片小说 | 午夜看片在线 | 欧美特黄三级成人 | 国产精品久久久久免费视频 | 男女一区二区三区免费 | 精品一区 二区三区免费毛片 | 在线成人福利 | 色偷偷国色天香在线观看免费视频 | 午夜伦理一yy4480影院 | 四虎网站最新免费地址2024 | 国内自拍 在线 亚洲 欧美 | 龙之心4:心火之战 | 内射无码专区久久亚洲 | 乱码中字在线观看一二区 | 在线观看成人网 | 求免费黄色网址 | 一区二区三区在线 | 亚洲精品久久久久久久蜜臀老牛 | 久久免费网 | 久久久久久久99久久久毒国产 | 国产精品视频第一区二区三区 | 欧美精品无码一二三区网站 | 免费a在线观看 | 在线v片免费观看视频 | 禁止的爱善良的小峓子3线国字 | 精品国精品国产自在久国产应用 | 国产午夜精品美女视频露脸 | 中文字幕无码无卡视频 | 国产crm系统91| 成人做爰高潮A片免费视频 成人做爰片免费网站 | 久草视频免费看 | 国产ts系列 | 国产福利在 线观看视频 | 97任你碰任你摸任你爽 | 泷泽罗拉 快播 | 中文字幕乱码在线播放 | 亚洲国色天香卡2卡3卡4 | 激情做a全过程片A | 九九久久看少妇高潮A片特黄 | 日韩熟女精品一区二区三区 | 黄页网站在线视频免费 | 在线免费成人电影 | 2020亚洲欧美日韩在线观看 | 野花社区WWW中文高清版 | 国产成人片| 亚洲国产精品无码中文在线 | 色少妇视频一区二区 | 琪琪电影网午夜理论片717西瓜 | 欧美性动态图 | 午夜福利小视频400 午夜副利电影手机高清在线直播app下载 | 色网址大全123 亚洲 | 国产成人精品日本无码动漫 | 免费不卡视频一卡二卡 | 久久免费看片 | 欧美日韩一区不卡在线观看 | 最近手机中文字幕大全首页 | 女人喷射视频在线播放你了 | 欧美人妻WWW无码国产黄漫 | 韩国伦理电影网站 | 午夜一级做a爰片久久毛片 午夜亚洲视频 | 国产亚洲日本精品无码电影 | 在线天堂最新版资源 | 久九九精品免费视频 | 日韩免费视频播播 | 91传媒制片厂果冻有限公司 | 在线看一区二区 | 黑人狂躁日本少妇在线观 | 伊人久久久综在合线久久在播 | 四虎最新版本2024在线网址 | va天堂va亚洲va影视中文字幕 | 国产亚洲日本精品无码电影 | 中文字幕AV在线一二三区 | 日本国产最新一区二区三区 | 少妇高清性色生活片成人版 | 大菠萝福利中心app 大尺度很黄很肉的小说 | 翁公半夜吃我下面 | 国偷自产视频一区二区99 | 欧美操女人 | 久久精品最新免费国产成人 | 又污又黄又无遮挡的网站国产 | 久久这里只有精品久久 | 一区二区三区四区国产 | 97玖玖| 最近最新中文字幕MV免费 | 成年人在线免费网站 | 狠狠狠色丁香婷婷综合久久五月 | 斗破苍穹第5季全集免费观看 | 国产精品伦一区二区三级视频 | 美美哒免费高清影院在线观看直播 | 大桥未久a 一区二区 | 六十路の高齢熟女が中文在线播放 | 亚洲性之站| 亚拍自拍 | 99re5久久在热线播放 | 亚洲色欲色欲WWW在线成人网 | 波多野结衣中文在线播放 | 欧美日韩一二区旡码高清在线 | 岳的下面又大又黑又肥 | 精品a级片 | 久久影城 | 一本大道卡一卡二卡三乱码 - 八 | 狠狠狠色丁香婷婷综合久久五月 | 中文字幕之中文字幕 | 亚洲人成77777A片张津瑜 |