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

enciclopédia

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

iegpnj

12 Oct 2025(atualizado 12/10/2025 às 03h32)

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

Temas

Compartilhe

Pico_da_Neblina_A_sacred_peak_off-limits_for_decades.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 loteria republica dominicanaits 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

'Gentle, gracious living' Laura Ashley and how the 'prairie homemaker' lifestyle took hold.txt

Photos_from_the_deep_sea_show_exciting_new_species.txt abrangente e os conhecimento entretenimento.

GRáFICOS

nos eixos

'It shocked white middle America' How the Mississippi Burning murders sparked landmark change in the US.txt

Police_accuse_Jair_Bolsonaro_and_son_of_obstruction_of_justice.txt foco e os entretenimento abrangente.

Navegue por temas

Propped_up_Raac_Kings_Lynn_hospital_rated_worst_in_country.txt Publishers_fear_AI_summaries_are_hitting_online_traffic.txt Photos_of_the_Blood_Moon_total_lunar_eclipse_-_BBC_Weather.txt Pulmonary_fibrosis_Woman_frightened_over_delays_to_vital_oxygen.txt Police_accuse_Jair_Bolsonaro_and_son_of_obstruction_of_justice.txt Photos_from_the_deep_sea_show_exciting_new_species.txt Principals_pay_tribute_to_Buncrana_students.txt Post Office scandal victims' message to Keir Starmer.txt Pope Joan the woman who fooled the church.txt Queer_review_Daniel_Craig_is_heartbreaking_in_this_explicit_gay_romance_but_the_story_goes_off_the_rails.txt
台湾十八成人 | 免费无码毛片一区二区A片 免费无码精品黄AV电影 | 日本人妻仑乱少妇A级毛片潘金莲 | 黄网在线免费观看 | 欧美三级日韩三级 | 日韩三级伦理片 | 成人美女黄网站色大色费 | 精品国产人妻一区二区三区久久 | 亚洲 自拍 偷拍 另类综合图区 | 老师的丰满大乳奶水在线观看 | 国产特黄特色的大片观看免费视频 | 国产高潮久久精品AV无码 | 亚洲m男在线中文字幕 | 最近免费中文字幕大全免费版视频 | 日本高清在线看片免费视频 | 97国产揄拍国产精品人妻 | 成人午夜A片产无码免费视频日本 | 国产亚洲中文日本不卡二区 | 国产香蕉视频在线 | 亚洲黄色网页 | 亚洲AV无码久久流水呻蜜桃久色 | 最近的中文字幕免费完整版 | www.黄视频| 国产又爽又黄又不遮挡视频 | 亚洲日本黄色 | 中文字幕人乱码中文 | 无码爽大片日本无码AAA特黄 | 久久亚洲A片COM人成A | 欧美一卡2卡3卡四卡海外精品 | 一卡二卡国产3卡4卡乱码 | 妞干网免费在线视频 | 亚洲日本va中文字幕婷婷 | 分享一个无毒不卡免费国产 | 无码人妻精品一区二区三区A片 | 蜜桃成熟时李丽珍 | 少妇VIDES裸体BBWWHD | 精品一卡2卡三卡4卡乱码理论 | 老湿机福利视频 | 最新日韩中文字幕 | 偷看洗澡好多毛 | 狠狠狠地在啪线香蕉 | 另类专区另类专区亚洲 | 92人妻国产一区二区三区 | 国产午夜免费视频片夜色 | 精品国产乱码久久久久久软件大全 | 黄色网址免费在线 | 国产大片黄在线观看 | 老司机试看午夜 | 久久一 | 久久免费看少妇高潮A片特无毒 | 日本中文字幕在线视频 | 亚洲精品一线二线三线无人区 | 欧美风情第一页 | 欧美精品高清在线观看 | 国产亚洲精品久久久久的角色 | 成人网在线播放 | 欧洲色情三级欧美三级视频 | 久久一日本道色综合久久m 久久一日本道色综合久 | 黄网址在线永久免费观看 | 国产精品二区页在线播放 | 高辣H文黄暴糙汉文H文 | 国内自拍视频在线播放 | 91精品导航在线网址免费 | 中文字幕在线最新在线不卡 | 黄视频入口 | 黑人大操白富美 内射 | 免费日韩精品 | 男女做爰猛烈吃奶摸A片 | 四虎影永久地址在线 | 野花社区www在线资源 | 六月丁香久久丫 | 六月婷婷综合网 | 天天躁夜夜躁狠狠夜夜 | 亚洲精品国产国语 | 91在线免费观看网站 | 亚洲午夜久久久无码精品网红A片 | 天天射天天射天天干 | 2018亚洲男人天堂 | 亚洲免费黄色 | 青青草国产免费国产是公开 | 九色国产在线 | 国产亚洲精品久久无码小说 | 伊人激情AV一区二区三区 | 国产AV无码熟妇人妻麻豆 | 久久免费视频精品 | 色综合桃花网 | 黄色国产网站 | 国产人妻人伦精品无码.麻豆 | 少妇性BBB搡BBB爽爽爽四川 | 日韩欧美不卡一区二区三区 | 婷婷综合亚洲 | 日本在线视 | 91精品免费不卡在线观看 | 色噜噜狠狠色综合久夜色撩人 | 天天干网 | 日本视频免费观看的网站 | 久久精品亚洲热综合一本 | 全球金属网 | 精品国产一区二区三区四区阿崩 | 免费中文字幕一级毛片 | 免费大片黄在线现看国语 | 92人妻国产一区二区三区 | 国产一区在线看 | 无码一卡二卡三卡四卡 | 国产精品日本免费视频 | 日本一区二区三区欧美在线观看 | 国产日本三级 | 校园春色 qvod | 日本一区二区三区不卡在线视频 | 久久久噜噜噜久久久 | 99热成人精品免费久久 | 免费国产网站 | 五月激情啪啪网 | 越猛烈欧美xx00动态图免费 | 午夜在线视频国产极品片 | 久久久99精品免费观看 | 96精品专区国产在线观看高清 | 女人下边被添全过程A片图片 | 黄页免费在线观看 | 激情国产一区二区三区四区小说 | 嗯灬啊灬用力再用力翁公 | 房奴试爱MBA | 九一视频在线观看 | 精品99re66| 亚洲a视频在线观看 | 秋霞电影网理论片韩国在线观看 | 开心色站 | 欧洲内射XXX高清 | 久久免费高清视频 | 青草视频在线观看完整版 | 豪门的YIN荡生活 | 九九在线精品视频 | 国产4tube在线播放 | 日本高清免费一本视频在线观看 | 被伴郎的内捧猛烈进出H | 成人福利在线播放 | 色中色最新网址 | 日韩在线aⅴ免费视频 | 日本强伦姧人妻无码视频 | 国产亲妺妺乱的性视频播放 | 亚洲 日韩 国产 中文视频 | 日本亚洲成人 | 午夜影院亚洲 | 国产又爽又黄无码无遮挡在线观看 | 黄金网站app在线看 黄黄网 | 五月天婷婷综合 | 久久国产精品永久免费网站 | 免费在线观看h片 | 国产精品国产三级国产专区不 | 丁香激情五月 | 国产AV亚洲精品久久久久 | 久久国产主播福利在线 | 久久久免费观看 | 国产成人无码视频一区二区三区 | 91精品导航| 欧美牲交A欧美牲交VDO | 在线视频播放免费网站视频在线 | 国产一级视频播放 | 疯狂撞击美妇雪白的大肉臀 | 亚洲最稳定资源在线观看 | 在线黄色网 | 国产精品国产精品国产三级普 | 中国国产高清一级毛片 | 国产成人精品日本亚洲18图 | 亚洲婷婷综合网 | 欧美又长又大又深又爽A片特黄 | 色爱b| 国产在线综合色视频 | 天堂岛WWW最新版在线资源 | 日本一道高清一区二区三区 | 亚洲中文字幕婷婷在线 | 午夜在线观看视频免费成人 | 啊灬啊别停灬用力啊动态图 | 天天色天天爱 | 婷婷天堂 | 在线天堂中文在线资源网 | 久久精品国产一区二区三区四区 | 久久99精品久久久久久青青日本 | 国产性生大片免费观看性 | www.成人电影.com | 青青青国产精品手机在线观看 | 在线观看免费的小电影网站 | 亚洲欧美久久久久久久久久爽 | 日本午夜精品久久久无码 | 在线看的成人性视频 | 亚洲毛片无码专区亚洲A片 亚洲蜜桃AV色情精品成人 | 欧美性生交活XXXXXDDDD | 国产av1插花菊综合网 | 欧美日韩国产一区二区三区 | 欧美午夜特黄AAAAAA片 | 欧美金妇欧美乱妇视频 | 影音先锋久草 | 日本一道人妻无码一区视频 | 又粗又大内射免费视频小说 | 欧洲免费看片尺码大 | 在线观看免费视频 | 成 人 网 站免费观看 | 精品欧美一区二区3d动漫 | 巨人精品福利官方导航 | 色婷婷在线观看视频 | 欧美视频日韩视频 | 人妻体内射精一区二区三四 | 久久国产欧美国日产综合抖音 | 大地资源网中文在线观看 | 在线精品国精品国产不卡 | 色在线视频网站 | 久久影院一区二区三区 | 求免费黄色网址 | 强行挺进朋友漂亮的娇妻作者 | 欧美一级第一免费高清 | 国产精品久久久久久99人妻绯闻 | 日本一道免费d v d | 久久草在线精品视频99 | 免费看饥渴难耐的少妇软件 | 日本不卡高清中文字幕免费 | 精品国产青草久久久久福利 | 3d肉蒲团快播种子 | 91频视| 好男人社区神马在线观看WWW | 成人乱码一区二区三区AV0 | 亚洲丁香婷婷 | 在线黄色小视频 | 91亚洲影院| 国产精品久久丫毛片A片软件 | 视频区 国产 图片区 小说区 | 无码AV亚洲一区二区毛片 | 国产第一页在线视频 | 国产香港特级一级毛片 | 欧美女人xx | 日韩 欧美 国产 师生 制服 | 大桥未久a 一区二区 | 毛片不卡一区二区三区 | 久久久无码精品成人A片小说 | 欧美一级在线观看 | 97精品国产高清自在线看超 | 午夜在线视频一区二区三区 | 五月天婷婷网亚洲综合在线 | 99精品久久99久久久久久 | 国产精品 欧美在线 另类小说 | 玖玖在线免费视频 | WWW国产亚洲精品久久 | 小妖精我要你真紧好爽视频 | 图片区小说区激情春色 | 奇米四色影院 | 日本高清一区二区三区无码 | 色中色影视 | 你懂的在线观看视频 | 日韩精品久久久久久 | 热99re久久国超精品首页 | 国产三级日本三级在线播放 | 97视频在线播放 | 久久视频在线直播 | 人妻激情综合久久久久蜜桃 | 亚洲人成人无码.WWW石榴 | 国产与自拍 | 波多野衣结在线精品二区 | 樱花草视频在线观看免费资源WWW | 日韩福利在线观看 | 亚洲中文超碰中文字幕 | 在线乱码一卡二卡麻豆 | 影音先锋男人在线资源资源网 | 91日本在线视频 | 秋霞电院影伦理 | 师尊被掐着腰做到潮喷纯肉GB | 小荡货好紧好爽奶头好大视频网站 | 美女扒开腿让男人桶尿口 | 欧美一卡2卡3卡四卡海外精品 | 最好看的2018中文在线观看 | 亚洲最新在线 | 一本色道久久88一综合 | 四房色播网址 | 99热热久久 | 波多野结衣 在线资源观看 波多野结衣 一区二区 | 天天插天天干 | 亚洲熟女乱综合一区二区在线 | 超级H荡的辣文小说 | 亚洲精品久久久久久动漫 | 国产视频一二三区 | 扒开粉嫩小泬把舌头伸进去添视频 | 国产午夜福利伦理300 | 大好深啊把腿开开污文腐 | 美女扒开腿让男人桶爽APP免费看 | 91精品一区二区 | 黄色片成人免费观看 | 欧美日韩中文在线 | 日本乱码一卡二卡三卡永久 | 91天堂在线视频 | 国产又色又爽又黄的视频免费看 | 国内揄拍国产精品人妻电影 | 亚洲精品久久区二区三区蜜桃臀 | 亚洲精品久久午夜无码一区二区 | 好吊日在线观看 | 欧美精品18videosex性欧美 | 动态图污动态 | 99久久精品费精品国产一区二 | 摸捏奶头动态图 | 老司机精品在线 | 欧美亚洲日韩在线在线影院 | 小婉和小娇243 | 亚洲精品久久国产高清情趣 | 欧美日韩一区不卡在线观看 | 精品欧美一区二区在线观看 | 久久久久久久国产 | 四虎成人免费观看在线网址 | 日韩欧美国产偷亚洲清高 | 神马午夜伦理dy888 | 久久免费看 | 日本黄色xxxx | 一级做a爰片久久毛片16 | 一区二区三区免费视频网站 | 久久99精品这里精品动漫6 | 午夜精品九九九九99蜜桃 | 精品久久久久久国产 | 亚洲AV成人无码网天堂 | 国产精品久久久久久52AVAV | 亚洲 欧洲 国产 日产 综合 | 最新高清无码专区在线视频 | 免费午夜福利不卡片在线 | 日本免费一区二区三区视频 | 欧美a级黄 | 亚洲三级毛片 | 国产美女69视频免费观看 | 国产三级欧美 | 亚洲资源在线观看 | 免费日产乱码卡一卡2卡三卡四 | 天天插天天干 | 国产偷窥熟妇高潮呻吟 | 翁莹情乱50章三人同床 | 最好影院在线免费看 | 国产肥白大熟妇BBBB视频 | 岳的大白屁股光溜溜 | 2018年亚洲欧美在线v | 国产精品久久免费视频 | 按摩做爰A片在线播放 | 丰满熟女人妻大乳波多野吉衣 | 亚洲熟妇无码乱子AV电影 | 免费人欧美成又黄又爽的视频 | 在线综合亚洲中文精品 | 成人性化生活视频 | 欧美三级视频在线 | AV色蜜桃一区二区三区 | 又硬又粗进去好爽A片免费多人玩 | 国产精品久久久久久日本一道 | 国产精品a无线 | 成年黄页网站大全免费 | 欧美一级在线播放 | 国产精品人妻无码免费A片导航 | 天堂资源在线最新版地址下载8 | 亚洲欧美日韩中文字幕久久 | 窝窝影院午夜看片毛片 | 巨大乳女人做爰视频在线 | 免费观看激色视频网站bd | 香蕉AV亚洲精品一区二区 | 日本黄页网站免费大全 | 久久精品99国产精品日本 | 嫩B人妻精品一区二区三区 嫩草AV久久伊人妇女 | 无码无遮挡成人A片 | jizz在线观看免费视频 | 毛茸茸xxx免费视频 毛茸茸xxx娇小 | 男女做爰的全部过程A片 | 娇妻被交换粗又大又硬视频 | 久久re视频这里精品一本到99 | 欧美一区二区在线免费观看 | 精品少妇一区二区三区A片 精品日本亚洲一区二区三区 | 国产一区二区三区免费大片天美 | 把腿张开老子臊烂你小说描写 | 大片免免费观看视频播放器在线观看 | 在线不卡日本v二区 w006.top | 九九九免费视频 | 日韩精品无码一区二区三区 | 国产爽的冒白浆的视频 | 成人国产色情免费观看 | 韩国青草视频19禁福利 | 国产精品人妻出轨AV大片 | 亚洲精品一区 | 乌龙院1国语免费完整版 | 亚洲AV久久无码精品九九九小说 | 女班长臭玉足踩踏榨精 | 日本中文字字幕乱码电影直播 | 日本一在线中文字幕天堂 | 国产一区二区三区美女在线观看 | 最新激情网站 | 伦 乱真实故事 | 国产色婷婷亚洲99精品小说 | 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 | 99精品国产在热久久 | 在线视频www777788coom | 亚洲欧美一区二区三区图片 | 天天射天天干天天 | 四房播播网址 | caoporn免费在线视频 | 日本无码成人深夜无码 | 欧美国产日本精品一区二区三区 | 天天操天天射天天操 | 富二代精品短视频在线 | 日韩成人免费在线 | 久久久99精品免费观看精品 | 插鸡网站在线播放免费观看 | 欧美最猛黑人猛男无码视频 | 成年人网站在线观看免费 | 黑人xxxx性hd极品 | 91极品视频在线观看 | 久久久久久毛片免费观看 | 精品国产一区二区三区四区勃大卷 | 久久无码AV亚洲精品色午夜 | 高清中文字幕视频在线播 | 亚洲精品综合久久 | 五月婷婷综合在线视频 | 在线成年av动漫电影 | 婷综合| 精品AV亚洲一区二区 | 日本熟妇乱人伦A片一区 | 熟妇人妻中文字幕无码老熟妇 | 秋霞电院影伦理 | 色www永久免费视频 色www永久免费 | 国产一国产一级毛片视频在线 | 中文天堂在线观看 | 国产午夜福利片 | 天天干天天干天天干 | v欧美精品v日本精品 | 伊人久久精品AV一区二区 | 亚洲中文字幕在线 | 国偷自产AV一区二区三区动漫 | 欧美激情在线一区二区三区 | 色情的人妻味道BD完整版 | 无码观看AAAAAAAA片 | 片毛片免费看 | 嫩B人妻精品一区二区三区 嫩草AV久久伊人妇女 | 日韩精品无码视频一区二区蜜桃 | 99国精产品品质溯源网 | 中文字幕AV久久一区二区 | 欧美日本一道免费一区三区 | 久久精品免费全国观看国产 | 亚洲精品白浆高清久久久久久 | 性爱五月 | 免费观看黄视频网站 | 91po国产在线精品免费观看 | 国产亚洲999精品AA片在线爽 | 青草视频免费观看在线观看 | 久久日本精品国产精品 | 欧美精品影院 | 国精产品一二二线网站 | 777四色 | 久久久久久一级毛片免费无遮挡 | 免费国产在线观看老王影院 | 婷婷六月色 | 2024无码高潮喷水A片 | 日韩欧美一区二区三区在线视频 | 宅男噜噜噜66一区二区 | 亚洲日韩在线视频 | 最近中文字幕高清中文 | 蜜臀AV色欲A片无码一区二区 | 日本不卡视频免费的 | 亚洲一区二区三区乱码在线欧洲 | 欧美人与zoxxxx视频 | 久久精品国产亚洲AV影院 | 日本高清专区一区二无线 | 亚洲精品偷拍的自拍的 | 黄色三级免费观看 | 国产精品免费小视频 | 国产精品国产三级国产普通话对白 | 日韩精品中文字幕在线 | 李李妮的视频vk | 在线久色 | 欧亚美性色欧美性A片 | 国自产拍偷拍精品啪啪色 | 国产免费久久精品99久久 | 私人影院无在线码免费 | 99久久精品免费看国产免费 | 熟女毛多熟妇人妻O在线视频 | 国产成 人 综合 亚洲网 | 日韩视频中文字幕精品偷拍 | 日本妇人成熟A片一区-老狼 | 鸥美毛片 | 久久亚洲A片COM人成A | 国产在线视频h | 乱子伦小说500短篇 伦 乱真实故事 | 色婷婷色综合 | 豪门的YIN荡生活 | 狠狠色丁香九九婷婷综合五月 | 国产一卡2卡3卡四卡国色天香 | 晓雪老师我要进你里面好爽 | 色妇视频 | 国偷自产一区二视频观看 | 视频一区国产在线第一页 | 免费真实播放国产乱子伦 | 久久777| 国产免费啪嗒啪嗒视频看看 | 成人免费精品网站在线观看影片 | 无码精品一二三四区A片 | 日本欧美国产精品第一页久久 | 综合色就爱涩涩涩综合婷婷 | 波多野结衣三级视频 | 婷婷夜夜躁天天躁人人躁 | 粉泬毛多水多30岁女人都是水 | 终结的炽天使动漫免费观看第一季 | 在线观看高清影院WWW | 久久久精品欧美一区二区免费 | 黄色一级毛毛片 | 久久无码人妻国产一区二区 | ts人妖系列在线专区 | 欧美性猛交一区二区三区 | 免费99精品国产自在现线 | 日本无码欧美激情在线视频 | 苍井空视频线免费观看 | 99re精彩视频| 九九亚洲视频 | 好大老师好爽快点深一点动漫 | 久久久免费精品 | 黄色网址免费在线 | 色天使久久综合网天天 | 欧美性做爰又大又粗又长 | 激情小说在线观看 | 日韩中文字幕视频在线观看 | 日韩好片一区二区在线看 | 春雨电影大全免费观看在线播放 | 日本三级韩国三级美三级91 | 91香蕉在线视频 | 色多多深夜福利免费观看 | 亚洲视屏在线 | 宅男噜噜噜一区二区三区 | 视频区 国产 图片区 小说区 | 花唇扒开(H)双性 | 青草视频免费观看 | 精品黑人一区二区三区久久 | 国产最新网址 | 快穿女主有名器的H纯肉黄暴拉文 | 强壮公次次弄得我高潮A片视频 | 国产成人午夜极速观看 | 青娱乐激情 | 国产电影一区二区三曲爱妃记 | 日韩A片无码毛片免费看久久 | 欧美日韩精品一区二区三区高清视频 | 97国产揄拍国产精品人妻 | 精品一区二区三区波多野结衣 | 免费看欧美特黄久久毛片久久 | 五月天丁香久久 | 337P粉嫩大胆色噜噜嚕 | 我要色播网 | 美女图片脱空一点不露 | 欧亚美性色欧美性A片 | xx顶级欧美熟妞xxhd | 免费一级淫片aaa片毛片a级 | 天天综合色天天综合 | 疯狂揉小泬到失禁高潮在线 | 欧美激情A片久久久久久 | 亚洲特黄大黄一级毛片 | 国模沟沟一区二区三区 | 久久久GOGO无码啪啪艺术 | 日本高清视频网站www | 亚洲人人爱 | 亚洲中文字幕无码爆乳APP | 人人看| chinese乱子伦xxxx国语对白 | 在线观看黄网 | 久久无码亚洲成A人片 | 亚洲精品久久久久久久蜜桃臀 | 久久久久久久国产精品毛片 | 日韩天堂视频 | 免费毛片手机在线播放 | 欧美日韩亚洲一区二区三区在线观看 | 欧美日韩一区不卡在线观看 | 成人性生交大片免费看中国A片 | 我们的生活第七季在线观看免费高清 | 亚洲国产美女视频 | 性感美女视频免费网站午夜 | 黄毛片 | CHINESE浪小辉GAY猛男 | 天天爱天天做色综合 | 亚洲日本va中文字幕区 | 丁香花成| 性满足久久久久久久久 | 日本xxx在线观看免费播放 | 亚洲品质自拍网站 | 久久精品国产99久久 | 黄色网zhan | 婷婷在线免费观看 | 人人插97| 99久久国内精品成人免费 | 深夜福利一区二区 | 欧美 亚洲 中文 国产 综合 | 午夜网站在线观看 | 亚VA芒果乱码一二三四区别 | 国产乱妇无码大黄AA片 | 菠萝蜜国际一区麻豆 | jjzz日本老师 | 狠狠色丁香九九婷婷综合五月 | 人妻寂寞按摩中文字幕 | 性一交一乱一交A片久久四色 | 中字幕视频在线永久在线观看免费 | 小说区 综合区 首页 | 黑人肉大捧进出全过程动态 | 好涨太粗进去用力快好深 | 最好韩国日本高清 | 免费国产精品视频在线 | 特级BBBBBBBBB视频 | 国精产品999永久中国有限公司 | 在线视频久 | 中文字幕天堂中文 | 日本一本二本无码免费视频 | 国产精品扒开腿做爽爽青涩情侣 | 日本aa视频 | 狠狠色噜噜狠狠狠狠狠色综合久久 | 亚洲操 | 色点的小说 | 亚洲情在线 | 国产精品一在线观看 | 久久精品视频在线直播6 | 亚洲色无码A片一区二区红樱 | 久久精品一区二区 | avav在线精品| 精品伦理片 | 高潮迭起AV乳颜射后入 | 亚洲大尺度吃奶做爰电影 | 欧洲色网站 | 美国三级在线 | 国产又色又爽又黄的免费站 | 在线天堂网 | 黄色三级免费看 | 亚洲乳大丰满中文字幕 | 天堂8在线天堂资源在线 | 天堂在线中文网 | 99久久精品久久久久久清纯 | 3d动漫精品一区视频在线观看 | 成人理伦 | 一本大道卡一卡二卡三乱码 - 八 | 99热这里只有精品免费 | 男女久久久国产一区二区三区 | 一道精品视频一区二区三区男同 | 精品无码一区二区三区不卡 | 久久久国产99久久国产首页 | 五月婷婷七月丁香 | 精彩大片在线免费观看 | 日韩国产毛片 | 欧美日韩精品一区二区三区视频 | 影视先锋男人无码在线 | 好吊色青青青国产在线播放 | 黄网站观看 | 最近中文字幕免费国语6 | 狠狠爱亚洲五月婷婷av | 国产精品AV一区二区三区不卡蜜 | 亚洲精品久久久午夜福利电影网 | 柳文文被肉干高H潮文不断 擼一擼AV网站 | 美国色综合| 性一交一乱一A片 | 日本护士xxxxx在线播放 | 亚洲A片无码精品毛片 | 狼人大香伊蕉国产WWW亚洲 | 香港三级日本三级三级韩级2 | 免费播放一区二区三区 | 葫芦娃.combo深夜释放自己 | 宅男噜66免费看网站 | 在线观看免费国产 | 男人天堂影院WWW94 | 欧美激情xxxx性bbbb | 国内一级一级毛片a免费 | 久久夜色精品国产尤物 | 亚洲激情黄色 | 欧美疯狂xxxx乱大交视频 | 国产手机精品一区二区 | 日本成人区 | 最近高清中文在线字幕在线观看1 | 日韩精品一区二区在线观看 | 国产精品亚洲精品久久久久 | 国产黄A三级三级三级AV在线看 | 国产亚洲一区在线 | 国产国产成人精品久久 | 色爱区综合五月激情 | 无码乱人伦一区二区亚洲 | 不卡一二区 | 2020中文字幕乱码免费 | 日本一卡二卡三卡四卡免费观 | 国产三级在线观看免费 | 女人18毛片A片久久18软件 | 在线视频一区二区三区在线播放 | 成人影院YY111111在线 | 全黄H全肉短篇禁乱NP慕浅浅 | 精品午夜寂寞黄网站在线 | 黄频网 | 国产三级日本三级韩国三级在线观看 | 一级毛片一级黄片 | 蜜臀91丨九色丨蝌蚪 | 中文字幕不卡在线 | 色综合色综合色综合色综合网 | 中国欧美日韩一区二区三区 | 精品国产乱码久久久久APP下载 | 漂亮的保姆7日本在线播放 漂亮人妻被公日日躁国产 漂亮人妻洗澡被公强欧美精品无码 | 影音先锋av在资源天堂 | 在线伦理片| 久久国产成人精品 | 在线不卡日本v二区到六区 在线岛国片免费观看无码 在线高清无码欧美久章草 在线观看 有码 制服 中文 | 欧美精品无码一区二区三区老鸭窝 | 国产福利影视 | 亚州老熟女A片AV色欲小说 | 一二三四日本免费 | 新japaneseoldman乱 | 九九热线有精品视频99 | 在线精品国精品国产不卡 | 亚洲精品区无码欧美日韩 | 久久AV亚洲精品一区无码网 | 18出禁止看的啪视频网站 | 欧美亚洲国产一区二区 | 久久天天躁夜夜躁狠狠85麻豆 | 亚洲精美视频 | 99精品久久99久久久久 | 免费光看午夜请高视频 | 伦理片在线观看午夜伦理电影三级网 | YY视频大片免费看网站 | 国产亚洲福利在线视频 | 工口漫画彩色无遮图片 | 免费播放一卡二卡三卡 | 成人影片麻豆国产影片免费观看 | 播九公社 | 依依网站| 在线看片福利无码网址 | 在线日本视频 | 欧美肥穴| 欧美成在线 | 性爱视频在线播放 | 一级毛片成人免费看免费不卡 | 国产电影一区二区三曲爱妃记 | 人人人人人看碰人人免费 | 五月天婷婷爱 | 亚洲国产精品久久网午夜 | 国产亚洲精品久久久久苍井松 | 日本免费在线一区 | 98国产精品人妻无码免费 | 国产电影一曲二曲三曲图片 | 日本少妇无码一区视频 | 成人午夜性A级毛片免费 | ACG全彩绅士口工侵犯漫画 | 一级毛片美国一级j毛片不卡 | 好爽又高潮了毛片免费下载 | 国产在线观看免费视频在线 | 午夜AV亚洲一码二中文字幕青青 | 欧美日韩精品一区二区三区 | 精品国精品国产自在久国产应用 | 久久久久久99 | 色欲AV色情国产又爽又色 | 豪妇荡乳1一5潘金莲2在线 | 疯狂揉小泬到失禁高潮AV | 国产亚洲AV综合一区二区A片 | 蜜桃999.com| 国产97碰免费视频 | 欧美一级片免费观看 | 色婷婷一区二区三区四区成人网 | 久久综合九色综合精品 | 人妻换人妻AA视频 | 激情色播| 色综合五月激情综合色一区 | 天天干天天操天天操 | 久久综合视频网站 | 国产亚洲精品久久久久久久软件 | 中国成人免费视频 | 在线久综合色手机在线播放 | 欧美人又长又大又粗无码视频一区 | 色偷拍亚洲国产大姐 | 亚洲网站在线观看 | 日本欧美中文字幕人在线 | 中文字幕韩国三级少妇在线光看 | 伦理高清百度影音 | 网站在线观看观看免费 | 伧理片午夜伧理片 | 国产精品久久久久久久久夜色 | 国产毛多水多女人A片 | 脔到她乖H糙汉1V1 | 在教室伦流澡到高潮H女攻视频 | 综合在线视频精品专区 | 91资源在线播放 | 国产手机在线国内精品 | 成人午夜视频在线观 | 一区二区三区日韩免费播放 | 欲女熟妇国产一区二区 | 好湿好紧快点再深一点动图 | 成人满18在线观看网站免费 | 国产成人深夜福利在线观看 | 益日韩欧群交P片内射中文 樱花草无码专区日本 | 全黄a免费一级毛片人人爱 全古装一级毛片大全 | 美国毛片免费一级 | 国产在线看片免费视频 | 深爱五月综合网 | 国产精品成人久久久 | 日韩成人免费 | 日韩在线播放中文字幕 | 国产精品亚洲玖玖玖在线靠爱 | 欧洲专线二三四区 | 黑人强伦姧人妻日韩那庞大的 | 成年黄网站 | 亚洲薄码区 | 中文字幕人妻少妇引诱隔壁 | 国产欧美va欧美va香蕉在线 | 与女乱小说目录伦下载 | 麻豆文化传媒精品一区 | a级欧美 | 亚洲成人免费电影 | 九九热这里只有国产精品 | 亚洲AV无码无限在线观看不卡 | 女人被添全过程A片免费视频 | 亚洲精品一区二区三区四区五区 |