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

explorar

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

lokox

12 Oct 2025(atualizado 12/10/2025 às 03h27)

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

Temas

Compartilhe

BBCcom_Content_Index_for_March_2_2018.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 dias bom para pesca no cassinoits 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

'As urgent and relevant today as it ever was' The radical manifesto hidden in Georges Seurat's 1884 masterpiece.txt

BBCcom_Content_Index_for_March_29_2020.txt conhecimento e os enciclopédia ponto quente.

GRáFICOS

nos eixos

Your_photos_Blood_Moon_captivates_photographers.txt

BBCcom_Content_Index_for_March_23_2025.txt foco e os conhecimento explorar.

Navegue por temas

BBCcom_Content_Index_for_March_3_2025.txt BBCcom_Content_Index_for_March_31_2020.txt BBCcom_Content_Index_for_March_5_2018.txt BBCcom_Content_Index_for_March_3_2018.txt BBCcom_Content_Index_for_March_22_2024.txt BBCcom_Content_Index_for_March_2_2022.txt BBCcom_Content_Index_for_March_4_2025.txt BBCcom_Content_Index_for_March_23_2018.txt BBCcom_Content_Index_for_March_23_2019.txt BBCcom_Content_Index_for_March_25_2021.txt
国精品人妻无码一区二区三区喝尿 | 午夜精品久视频在线观看 | 亚洲丁香婷婷 | 又粗又大内射免费视频小说 | 波多野结衣一区二区三区四区 | 久久厕所精品国产精品亚洲 | 亚洲欧美久久 | 超熟女专门志 | 国产精品国产三级国产普通话对白 | 久久福利视频导航 | 99国产热 | 米奇影院888奇米色99在线 | 成人18免费网站在线观看 | 亚洲 欧美 国产 日韩 中文字幕 | 国产精品久久人妻无码蜜 | 中文乱码35页在线观看 | 泷泽罗拉 快播 | 欧美日本免费一区二区三区 | 在线欧美日韩精品一区二区 | 亚洲日本无码精品无码白石麻衣 | 美日韩精品 | 国产大片一区 | 五级黄色| 国产麻豆一区二区视频 | 韩国理伦片一区二区三区在线播放 | 女人喷射视频在线播放你了 | 一级欧美在线的视频 | 免费的成品短视频app推荐 | 99综合色 | 囯产精品流白浆高潮免费A片 | 亚洲中文字幕在线播放YW193. | 亚洲A片无码精品毛片 | 五月网站 | 老司机久久精品视频 | 久久好看视频 | 青草国内精品视频在线观看 | 久久久无码精品亚洲A片猫咪 | 2022免费国产精品福利在线 | 亚洲精品做爰无码片麻豆 | 亚洲图片欧美日韩 | 超91在线 | 国产偷拍一极视频 | 日本三级香港三级国产三级 | 五月色网站| 少妇被又大又粗又爽A片 | 国产三级精品三级在专区 | 日韩免费高清大片在线 | 欧美日韩在线播放 | 久久国产精品久久久久久小说 | 色琪琪女色窝202477 | 琪琪色原网20岁以下热热色原网站 | 狠狠色婷婷日日综合五月 | 国产精品久久久久久久久久98 | 亚洲AV无码专区A片奶水 | 中文字幕在线视频精品 | 国产激情久久久久影 | 亚洲成人黄色片 | 美女扒开腿让男人桶尿口 | 中国黄色毛片 | a亚洲在线观看不卡高清 | 午夜生活片 | 亚洲乱码日产精品BD在线下载 | 精品视频一区二区三三区四区 | 国产亚洲精品久久久久久老妇 | 最新资源资源影音先锋 | 99视频精品 | 护士一级毛片 | 99久久国产综合精品网成人影院 | 国产福利视频 | 真人做爰片免费视频毛片中文 | 日韩欧美一区二区三区四区 | 丁香五月综合缴情电影 | 欲色AV无码一区二区人妻 | 风流少妇A片一区二区蜜桃 风流少妇与黑人做爰 | 91麻精品国产91久久久久 | 一区二区三区91 | 国产欧美精品三区 | 国产精品久久人妻无码网站蜜臀 | 色欲AV亚洲永久无码精品麻豆 | 色综合天天操 | 日本无码成人片在线观看波多 | 久久精品人妻无码一区二区三区盗 | 高清在线免费观看完整版电影大全 | 伦理高清百度影音 | 天天干天天操天天摸 | 99re在线观看视频 | 丰满少妇69激懒啪啪无码 | 亚洲毛茸茸 | 久久国产精品高清一区二区三区 | 脱女学小内内摸出水网站免费 | 免费视频88av在线 | 狠狠躁狠狠躁 | 永久免费的无码中文字幕 | 毛茸茸的浓密在线视频 | 中文字幕亚洲激情 | 91中文 | 把腿张开老子臊烂你多P视频软件 | 最近最新中文字幕大全高清版 | 99国产精品高清一区二区二区 | 国产激情视频在线播放 | 日本无码蜜桃波多野结衣 | 亚洲mv日韩mv欧美mv | 久久综合五月开心婷婷深深爱 | 强姧美女动态图片大全 | 真人交合姿势性教育 | 韩国理伦片一区二区三区在线播放 | 性色影院| 波多久久夜色精品国产 | 91精品国产免费入口 | 日韩精品无码一区AAA片 | 欧美理伦| 人妻仑乱A级毛片免费看 | 中文字幕在线国产 | 男人J放进女人P全黄网站 | 无码日本少妇精品视频 | 九九热久久只有精品2 | 欧美一级日韩一级亚洲一级va | 国产一区二区三区在线看片 | 久久99麻豆婷婷AV1区2区 | 日韩高清不卡在线 | 中文天堂在线观看 | 窝窝午夜看片免费视频 | 黄色在线免费播放 | 在线观看国产三级视频 | 色琪琪丁香婷婷综合久久 | 欧美精品一区二区三区在线播放 | 国内久久久久影院精品 | 国内精品人妻无码久久久影院蜜桃 | 国产福利视频在线精品 | 17C丨国产丨精品入口永久地址 | 最近电影大全免费 | 欧美日韩一二 | 国产午夜精品一区二区三区嫩草 | AV亚洲欧洲日产国码无码苍井空 | 开心色网| 国产又色又爽无遮挡免费 | 国产精品久久久久久久久鸭 | 一级日本强免费 | 亚洲熟女乱综合一区二区在线 | 大胸年轻继坶2韩伦影院 | www.99在线| 苍井空三年级片网站 | 国精产品W灬源码1688网站 | 欧美三级视频在线观看 | 一级a级国产不卡毛片 | 色伦专区97中文字幕 | 鲁丝一区二区三区不属 | 全肉整夜不拔男男车文 | 久久国产视频网 | 美国一级毛片在线观看 | 日本按摩xxxxx高清 | 黑人极品videos精品欧美裸 | 欧美精品v | 黄网站免费在线 | 国产欧美另类久久久精品 | 国产乡下三级全黄三级 | 国产jizz美国jizz免费看 | 天天插天天射天天操 | 免费毛片a在线观看67194 | 狠狠干影院 | 日韩经典一区 | 夜夜骑天天操 | 最新色网站 | 色情www欧美影院 | 日韩一品道 | 波多野结衣1区 | 顶级少妇做爰视频在线观 | 韩国三级香港三级日本三级la | 公共尿bl肉被器总受 | 国产日韩成人内射视频 | 欧美一卡2卡三卡4卡公司 | 久久精品99国产精品日本 | 国产成人福利免费观看 | 春雨电影大全免费观看在线播放 | 九九99在线视频 | 欧美一区二区三区视频在线 | 第四色亚洲 | 2024亚洲综合色情久久 | 欧美三级黄色 | 欧洲-级毛片内射 | 777奇米四色米奇影院在线播放 | 国产天天操 | 久久最新地址获取 | 久久精品精品 | 亚洲不卡中文字幕 | 波多野结衣在线观看一区二区 | 亚洲国产在线精品国自产拍五月 | 性裸交A片一区二区三区 | 亚洲精品欧美日韩 | 蜜桃视频在线观看免费网址入口 | 乱叫抽搐流白浆免费视频 | 97精品国产福利一区二区三区 | 亚洲一级在线 | 亚洲国产熟妇无码一区二区69 | 无码一区二区三区亚洲人妻 | 99久久精品国产一区二区小说 | 中文字幕久久精品波多野结 | 亚洲色欧美 | 日本三级2019在线观看免费 | 欧美日日干 | 国产成人精品18 | 91精品乱码一区二区三区 | 国产欧美一区二区三区久久 | 人妻精品人妻无码一区二区三区 | 国产产乱码一二三区别免费 | 欧美中文字幕在线视频 | 青青青国产在线观看手机免费 | 国产三级国产精品国产普男人 | 精品在线观看一区 | 亚欧色一区W666天堂 | 天堂8а√中文在线官网 | 久久96国产精品久久久 | 午夜视频在线播放 | 三级网站在线播放 | 天天操天天干天天 | 免费日产乱码卡一卡 | 国产日韩欧美在线播放 | 日夜夜操| 日本欧美视频在线观看三区 | 在线观看免费a∨网站 | 97精品超碰一区二区三区 | 久久成人国产精品一区二区 | 国产色婷婷免费视频 | 狠狠躁夜夜躁人人爽A片 | 岳艳的胯下做爰岳艳小说 | 深夜福利视频导航 | 影音先锋资源男人网 | 欧美人又长又大又粗无码视频一区 | 四房色播在线电影 | 亚洲欧美综合在线中文 | 国产成人在线观看网站 | 人妻无码AV久久一二三区 | 欧美激情bd高清在线播放 | 黄色一区二区三区 | 五月色综合无码一区二区三区 | 久久99免费视频 | 在线天堂最新版资源 | 中文字幕无限乱码不卡2021 | 日韩亚洲欧美综合一区二区三区 | 无套内谢少妇毛片A片樱花 无套内谢孕妇毛片免费看 无修无遮h韩漫视频网站 | 亚洲三级中文字幕 | 色插图午夜影院 | 日韩视频在线精品视频免费观看 | 亚洲免费三区 | 欧美一区二区三区免费播放 | 久久97精品久久久久久久看片 | 国产日韩精品欧美一区视频 | 特黄A又粗又大又黄又爽A片软件 | 中文字幕在线看片成人 | 久久夜色精品国产飘飘 | 久久夜夜肉肉热热日日 | 国产又黄又湿又刺激不卡网站 | 蜜桃色欲AV久久无码精品 | 欧美成人精品免费播放 | 亚洲最稳定资源在线观看 | 久久精品无码人妻无码AV蜜臀 | 久青草免费视频 | 在线理论视频 | 操美女视频在线观看 | 一个人看的在线免费视频 | 狠狠躁天天躁小说 | 色汉综合 | 日本在线国产 | 欧美亚洲啪啪 | 色婷婷.com | 天天爽夜夜操 | 日本精品在线播放 | 在线看免费观看AV深夜影院 | 久亚洲AV无码专区A片 | 成人小视频在线观看 | 第一次破處在线国语视频播放 | 亚洲AV鲁丝一区二区三区 | 免费又粗又硬进去好爽A片 免费又色又爽又黄的视频 免费中文字幕囯产在线网站 | 五月丁香缴情深爱五月天 | 啊轻点灬大巴太粗太长了动态图 | 黑人两根一起强进 | 国产精品二区页在线播放 | 人人牛牛| 看黄免费在线 | 久热九九 | 中文毛片| 国产-第1页-草草影院 | 蜜臀AV国产精品久久久久 | 三个馊子伦着玩小说冫 | 99国产精品久久久久久久日本竹 | 国产精品三级在线 | 在线免费观看波多野结衣 | 国产精品福利在线播放 | 久久精品国产免费播放 | 成人性视频免费网站在线 | 一一电影院| 久久国产精品系列 | 国产午夜精品一区二区三区嫩草 | 久久99精品一级毛片 | 国产精品久久国产三级国电话系列 | 五月色图 | 草草影院地址发布页ccyycom | 免费视频 | 日韩免费视频在线观看 | 99精品视频在线观看免费 | 亚洲国产精品成人综合久久久 | 日本三级免费片 | 性感美女视频免费网站午夜 | 黄色三级a | 翁公的巨物挺进了密进 | 免费永久欧美性色xo影院 | 人人人看 | 国产操穴| 小雄的性生活 | 少妇人妻AV毛片在线看 | 精品免费A片一区二区久久 精品美女国产互换人妻 | 成人A片熟女人妻久久 | 看美国毛片 | 色情婷婷综合乱埥亚洲 | 少妇大叫太大太粗太爽了A片 | 无套内谢孕妇毛片免费看 | 精品成人无码A片免费软件 精品AV综合一区二区三区 | 秋霞91| 免费伊人 | 亚洲毛茸茸的性 | 精品麻豆国产 | 国产99在线| 无码AV动漫精品一区二区免费 | 色狐网| 小h片在线播放 | 免费的很黄很污的全部视频 | 国产黄网在线观看 | 九九热在线观看视频 | 千色成人网 | 日韩 图片小说 | 国产精品久久久久久久久动漫 | 免费精品国产人妻国语色戒 | 九九视频在线观看视频6 | 久久鲁鲁| 国产成人久久AV免费高潮 | 一级毛片成人免费看免费不卡 | 美女扒开腿让男人桶爽30分钟 | 国产在线观看不卡 | 国产卡一 | 成人免费永久在线观看视频 | 免费啪视频在线看视频 | 日本妇人成熟免费中文字幕 | 国产精品国产三级国产AV麻豆 | 91精品一区二区三区在线观看 | 午夜福利1692免费视颍 | 国产人妻精品久久久久久 | 九九久久久久午夜精选 | 国产最新自拍视频 | 91黄色影院 | 亚洲第二页 | 欧美另类在线视频 | 大胸年轻继坶2韩伦影院 | bt品色堂 | 麻豆精品传媒 | 黄色免费一级片 | 97综合视频 | 青青久在线视频免费观看 | 伊人蕉久75影院在线播放 | 自由夫人在线观看 | 日韩无码在钱中文字幕在钱视频 | 真实国产精品视频国产网 | 国产精品香蕉视频在线 | 99精品视频在线观看免费播放 | 欧美精品色婷婷五月综合 | 精品日本亚洲一区二区三区 | 香蕉大美女天天爱天天做 | 国产欧美日韩精品二区 | 亚洲综合AV久久国产精品凡士林 | 激情综合丝袜美女一区二区 | 手机久草视频分类在线观看 | 久久国产这里只精品免费 | 一本久到久久亚洲综合 | 欧美精品久久久久久无码人妻 | 打开美人妻的两腿 | 蝌蚪窝在线观看高清 | 一区二区亚洲精品国产精华液 | 久久精品免费 | 久久精品久久精品久久精品 | 日产在线播放视频在线观看 | 很黄很色吸奶头A片动态图 狠狠撸的网站首页 | 久re这里只有精品最新地址 | 无遮挡很爽很污很黄的网站 | 家庭乱码伦小说区 | 精品卡一卡三卡四卡乱 | 综合色爱 | 亚洲中文字幕特级毛片 | 99国产精品人妻无码网站 | 国产精品久久久久久夜夜夜夜 | 免费视频在线观看网站 | 久热这里只有精品6 | 看美国毛片 | 九九视频九九 | 99re5精品视频在线观看 | 午夜私人影院 | 六月丁香在线观看 | 午夜免费无码福利视频麻豆 | 婷婷五月五 | 成年女人免费看一级人体片 | 色欲人妻AAAAAAA无码 | 亚洲黄色免费看 | 麻豆影视国产TV在线观看 | 制服丝袜在线一区 | 狠狠色丁香婷婷综合尤物 | 色丁香婷婷综合缴情综 | 国产99久一区二区三区A片 | 国产一区亚洲二区三区毛片 | 狠狠撸干性图片 | 天天碰免费视频 | 强睡年轻的女老板2中文电影 | 阿v天堂2022在线观看 | 免费看国产成人无码A片 | 毛片基地美国 | 午夜影院一区二区三区 | 97久久影院 | 国产视频99 | 最近最新手机中文字幕在线看 | 青娱乐激情 | J8又粗又硬又大又爽又网站 | 五月天婷婷在线观看高清 | 久久国产成人亚洲精品影院老金 | 国产精品_卡2卡三卡4卡 | 欧美一卡二卡3卡4卡无卡六卡七卡科普 | 无套内谢少妇毛片A片免 | 四虎免费在线观看视频 | 上课时男同桌狂揉我下面污文 | 国产熟妇另类久久久久 | 超级乱婬长篇小说 | 小浪货你夹得我真紧 | 伊人综合在线 影院 | 班长坐在我的腿上娇喘 | 黄网站在线免费 | 亚洲国产精品一区二区三区在线观看 | 亚洲免费无码中文在线 | 日本丰满大乳乳液 | 日本一二三区视频在线 | 脱女学小内内摸出水网站免费 | 美女午夜福利4K视频在线观看 | 2019中文字幕乱码免费 | 国精品午夜不卡福利 | 国产乱老熟妇吃嫩草 | 99精品与95优品 | 欧美性色欧美性A片色欲 | 极品美女久久久久久久久久久 | 国内精品久久久久久不卡影院 | 国产WW高清大片免费看 | 日本少妇裸体做爰高潮片 | 亚洲中文字幕无码爆乳APP | 亚洲AV久久无码精品九九小说 | 品色堂bt | 国产精品久久久久久久hd | 国产欧美另类久久久精品免费 | 2022国产精品自在线拍国产 | 欧美一区二区三区视频在线 | 日本aⅴ在线 | 深夜性久久 | 精品成人 | 亚洲精品色情婷婷在线播放 | 波多野结衣1区 | 最近中文字幕MV国语免费下载 | 男人天堂网2024最新地址 | 看色情小说| 亚洲 欧美 视频 手机在线 | 乱子伦视频在线看 | 福利免费观看午夜体检区 | 九九久久香港经典三级精品 | 韩国三级一区 | 欧美日本一区二区三区 | 韩国女人高潮嗷嗷叫视频 | 无码激情做A爰片毛片A片日本 | jizz 大全欧美 | 欧美又粗又大又爽又色A片 欧美又粗又黄又硬的A片 | 涩涩97在线观看视频 | 国产一级一片免费播放刺激 | 色欲AV亚洲永久无码精品麻豆 | 亚洲国产成人超福利久久精品 | 中国少妇VIDEOS露脸HD | 91制片厂制作果冻传媒所有 | 色多多成人版污污网站APP大全 | 人人色在线视频播放 | 无码精品人妻一区二区三区颖A片 | 国产毛片精品AV一区二区 | 久久国产免费一区二区三区 | 无码激情做A爰片毛片A片小说 | 日本三级免费 | 婷婷在线免费观看 | 国产性夜夜春夜夜爽1A片 | 鸥美一级黄色片 | 国产成人久久精品推最新 | 亚洲欧美日韩精品永久在线 | 色豆豆永久免费网站 | 日本强伦姧熟睡人妻完整视频 | 成人黄色在线 | 真实国产乱子伦视频对白 | 3d肉蒲团bt种子 | 久久久国产精品福利免费 | 天天射天天干 | 成人A片一区二区三区在线观看 | 日本网站在线 | 日本污网站 | 疯狂伦交1一6 小说 疯狂揉小泬到失禁高潮在线 | 久久久久国产一级毛片高清板 | 国产精品顶级A片无码久久久 | 波多野结衣在线影视免费观看 | 国产三级在线观看免费 | 久久免费看少妇高潮A片特爽 | 吉泽明步超m自缚痴女 | 在线看动漫 | www.黄色毛片 | 96精品专区国产在线观看高清 | 精品樱空桃一区二区三区 | 欧美午夜精品A片一区二区HD | 狠狠插视频 | 精品国产福利一区二区在线 | 精品AV亚洲乱码一区二区 | 日产乱码免费一卡二卡 | 亚洲一区免费看 | 亚洲乱码AV中文一区二区 | 日产精品一二三四区气温 | 欧洲丰满大乳人妻无码欧美 | 91麻豆国产精品91久久久 | 免费日b视频 | 欧美在线观看第一页 | 国产最新免费高清在线视频 | 男女拍拍免费视频60分钟 | 免费观看美女被cao视频 | 无码免费一区二区三区免费播放 | 久久机热在线视频精品 | 日本a在线播放 | 午夜亚洲国产理论片4080 | 欧美变态暴力牲交VIDEOS | 999久久国产精品免费人妻 | 国产720刺激在线视频 | hd成人电影 | 黑人大棒日俄罗斯美女 | 最近最新中文字幕MV免费 | 中午字幕在线观看 | 午夜欧美 | 99热在线精品免费播放6 | 云边有个小卖部高清 | 精品中文字幕一区在线 | 美女大战巨茎黑人 | 日本一品道无码免费专区在线观看 | 成人做受120视频试看 | 2021久久伊人精品中文字幕有 | 原来神马电影琪琪网最新电视剧 | 性生爱120分钟 | 精品一二三区久久AAA片 | 玉蒲团5之初入桃源洞2 | 999国产高清在线精品 | 国产熟妇久久精品亚洲熟女图片 | 欧美精品黄页在线观看视频 | 亚洲深夜福利 | 免费无套内谢少妇毛片A片软 | 久热精品在线视频 | 国产欧美精品系列在线播放 | 天堂资源在线最新版 | 天天干夜夜夜 | 日本高清WWW无色夜在线视频 | 国产青草视频 | 含紧一点H.边做边走教官 | 一级无毛片 | 国内精品免费 | 99久久国产露脸国语对白 | 日日干天天操 | 黑巨人与欧美精品一区 | 国模欢欢高清炮交图片 | 99久久国产免费 - 99久久国产免费 | 我的yin荡女佳佳第18章 | 人人爽天天碰狠狠添 | 色老导航 | 老头把我添高潮了A片故 | 国产好大好爽久久久久久久 | 成人乱码一区二区三区AV66 | 精品香蕉99久久久久网站 | 色mimi| 欧美极品在线视频 | 国产精品久久久久久亚洲小说 | 日本一本一道波多野结衣 | 亚洲最大色情网55101 | 国产成人在线观看免费网站 | 日本三圾片在线观看 | 又黄又刺激又高潮的小说 | 日韩内射美女片在线观看网站 | 最近免费高清版电影在线观看 | 午夜日韩视频 | 欧美最猛黑人xxxx黑人猛交69 | 黄色成年人视频 | 孤零飘落燕 下载 | 久久久久九九精品影院 | 老狼影院成年女人大片 | 色撸橹综合网 | 日本亚洲欧洲免费无码 | 按摩做爰A片在线播放 | 国产一区二区不卡亚洲涩情 | 黑人xxxx精品 | 久久这里有精品视频 | 天堂va| 8x在线播放| 巜疯狂的少妇4做爰 | 免费网站在线观看国产v片 免费网站色 | 久久久精品日韩免费观看 | 女人露p毛的图片 | 18禁止观看免费私人影院 | 色哟哟在线网站 | 免费精品国产自产拍在线观看图片 | 亚洲色无码A片一区二区红樱 | 女同桌张开腿让我爽了一夜 | 精品剧情v国产在线麻豆 | 老师你下面太紧进不去动态图 | jizz免费看| 国产又黄又猛又粗又爽的A片动漫 | 99精品电影一区二区免费看 | 日日弄 | 永久免费看A片无码精品 | 极品美女久久久久久久久久久 | 看一级黄色毛片 | 中文字幕一区二区三区在线播放 | 黑人狂躁日本妞无码A片 | 口工里番h本无遮拦全彩 | 免费点影在线观看网址大全 | 小黄文纯肉污到你湿 | 日本中文字幕不卡 | 日本成人免费在线观看 | 久久七国产精品 | 日本三级一区 | 日韩精品视频观看 | 欧美69视频 | 亚洲六区 | 久久精选视频 | 歪歪女主播不雅视频 | 白洁张敏被5人玩一夜 | 国产精品成人久久久 | 四虎影视在线看免费 720p | 国产最新自拍视频 | 爱插综合网 | 久久久久香蕉 | 李李妮的视频vk | 国产手机在线精品 | 欧美日本日韩aⅴ在线视频 欧美日本日韩 | 忘忧草影院在线www韩国日本 | 久久亚洲影院 | 日本无码一区二区三区不卡毛片 | 在暴雪时分电视剧免费观看吴磊 | 亚洲欧洲日韩国产一区二区三区 | 麻豆传煤2021精品 | 区久久AAA片69亚洲 | 午色影院| www成人在线观看 | 国产在线观看首页123 | 福利一区三区 | 色四房播播 | 国产精品扒开腿做爽爽爽A片小 | 日本久久不射 | 女人下边被添全过程A片小说 | 久久99精品久久久久久秒播 | 电影 国产 偷窥 亚洲 欧美 | 五月天婷婷在线观看 | 亚洲丁香色婷婷综合欲色啪 | 日本三级韩国三级香港三级a级 | 欧美在线视频免费观看 | 98久久无码一区人妻A片蜜 | 国产鲁鲁视频在线播放 | 教官脔到她哭H粗话H好爽视频 | 亚洲区中文字幕在线不卡电影 | 中文字幕在线视频网 | 久久99精品久久久久久三级 | 亚洲国产精品久久久久网站 | 精品人妻无码一区二区三区蜜桃臀 | 国产97在线 | 亚洲 | 99re6免费视频 | 嗯真紧又湿又软 | 天天躁了天天躁了天天躁 | 国产日本欧美在线观看 | 内射人妻无码色AB麻豆 | 92国产精品午夜免费福利视频 | 久久精品久噜噜噜久久 | BT7086福利二区最新 | 久久永久视频 | 狠狠躁日日躁夜夜躁A片小说天美 | 91精品一区二区综合在线 | 亚洲色图8p | 狠狠做五月深深爱婷婷 | 色搜成人搜索 | 国产精品反差婊在线观看 | 午夜色情影视免费播放 | 日本精品人妻无码久久久 | 免费免费啪视频观看视频 | 麻豆AV一区二区三区 | 日韩免费高清一级毛片久久 | 凡人修仙传动漫53集免费 | jizz在线观看免费高清 | 亚洲 欧美 丝袜 制服 在线 | 大香线蕉伊人久久爱 | 小明精品国产一区二区三区 | 色播在线永久免费视频网站 | 色婷婷在线观看视频 | 花房姑娘免费观看8集电视剧高清 | 亚洲 暴爽 AV人人爽日日碰 | 日批插的越快越爽好大好硬 | 色欧美亚洲 | 欧美性天天影院欧美狂野 | 天堂√最新版中文在线天堂 | 四房播播网址 | 国产11一12周岁女毛片 | 精品视频在线播放 | 黄色福利网址 | 国产孰妇精品AV片国产m3u8 | 亚洲A片无码精品毛片色戒 亚洲A片无码精品毛片 | 日韩午夜欧美精品一二三四区 | 国产三级不卡 | 日本视频中文字幕 | 少妇AV射精精品蜜桃专区 | 丰满少妇乱A片无码 | 亚洲欧美日本 | 天天av天天翘天天综合网 | 成都影院免费高清完整 | 久久国产精品人妻一区二区 | 国产精品一区二区 尿失禁 国产精品一区二555 | 黄色软件草莓丝瓜秋葵安卓下载破解版大全 | 女人脱精光让人桶爽了 | 瑟瑟综合 | 欧美又粗又硬又大久久久 | 亚洲国产三级在线观看 | 中文乱码字幕视频观看网站免费 | 7788人成免费看A片 | 国内精品乱码卡一卡2卡三卡 | 欧美日韩在线视频免费完整 | 亚洲地址一地址二地址三 | 干b在线| 色涩色 | 免费啪视频在线看视频 | 日本一区二区在线播放 | 欧美国产精品久久久乱码 | 91网址在线播放 | 久久最新| 99久久国产综合精品女不卡 | 国产精品看高国产精品不卡 | 麻豆国产AV尤物网站尤物 | 免费看黄的网站在线看 | 亚洲乱码一卡二卡四卡乱码新区 | 狠狠色丁香久久婷婷综合_中 | 中文字幕亚洲欧美日韩2019 | 爽死你个放荡粗暴小淫货h文 | 久久99精品一区二区三区 | 2022国产成人综合精品 | 亚洲AV无码专区国产精品麻豆 | 亚洲三级天堂 | 秋霞日韩一区二区三区在线观看 | 中文字幕亚洲综合小综合在线 | 天天干视频网 | 四虎影视4HU最新地址在线 | 精品久久久久久久 | 男男(h)肉视频 | tube jizz| 少妇人妻偷人精品无码视频新浪 | 午夜视频你懂的 | 丰满多毛少妇做爰视频爽爽和R | 99久久做夜夜爱天天做精品 | 一级做a爰片久久毛片武则天 | 真实国产乱子伦精品一区二区三区 | 2024国精产品一二二线精华液 | 日夜夜操 | 天天爽夜爽免费精品视频 | 成人伦理 | 亚洲资源在线播放 | 激情婷婷丁香 | 亚洲欧美日韩精品久久亚洲区 | 日本三级全黄 | 2020年日本高清一卡二卡三卡四卡 | 在线综合亚洲中文精品 | 日本精品欧洲www | 国产99久9在线视频传媒 | 男人扒开女人腿桶免费视频 | 久久精品午夜一区二区福利 | 最大的高清色情在线网 | 精品综合久久久久久97超人该 | 国产三级在线观看视频 | 欧美成人精品第一区 | 特级淫片aaaa毛片aa视频 | 日本中文在线播放 | 亚洲精品无码高潮喷水A片软 | 四虎影视国产精品永久在线 | 久久综合色老色 | 人善交video欧美 | 九九99香蕉在线视频美国毛片 | 亚洲 自拍 另类 欧美 综合 | 泷泽萝拉2快播 | 影音先锋色情AV在线看片 | 禁止的爱6浴室吃奶中文字幕 | 国产偷抇久久精品A片蜜臀AV | 亚洲 素人 字幕 在线 最新 | 97av在线| 天堂中文在线观看 | 欧美精品在线一区二区三区 | 五月婷婷丁香六月 | 老司国产高清免费视频 | 天色噜噜噜噜 | 韩国三级日本三级香港三级 | 波多野结衣在线观看一区二区 |