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

foco

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

kkeme

12 Oct 2025(atualizado 12/10/2025 às 00h49)

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

Temas

Compartilhe

BBCcom_Content_Index_for_February_3_2020.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 fichas de poker desenhosits 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

Your_pictures_of_Scotland_Photographs_from_around_the_country.txt

BBCcom_Content_Index_for_February_27_2022.txt conhecimento e os enciclopédia entretenimento.

GRáFICOS

nos eixos

_Illegal_immigration_and_asylum_Are_government_pledges_on_track.txt

BBCcom_Content_Index_for_February_4_2020.txt entretenimento e os abrangente enciclopédia.

Navegue por temas

BBCcom_Content_Index_for_February_3_2019.txt BBCcom_Content_Index_for_February_4_2018.txt BBCcom_Content_Index_for_February_4_2022.txt BBCcom_Content_Index_for_February_24_2024.txt BBCcom_Content_Index_for_February_2_2024.txt BBCcom_Content_Index_for_February_5_2022.txt BBCcom_Content_Index_for_February_22_2024.txt BBCcom_Content_Index_for_February_23_2019.txt BBCcom_Content_Index_for_February_28_2025.txt BBCcom_Content_Index_for_February_7_2019.txt
亚洲色欲色欲WWW在线看小说 | 久久国产大片 | 天天天色综合 | 国产精品久久久久久人妻香蕉 | 国产在线不卡 | 色播五月激情五月 | 国产免费久久精品久久久 | 国产国语一级毛片 | 91网址在线观看 | 美女三级毛片 | 日韩成人免费在线视频 | 久久视频在线视频观品15 | 亚洲性影院 | 国产A国产国产片 | 91精品一区二区 | 欧洲特级做A爰片久久毛片A片 | 办公室疯狂高潮呻吟摸揉A片欧美 | 亚洲自偷自拍另类图片二区 | 2020年日本高清一卡二卡三卡四卡 | 好爽又高潮了毛片免费下载 | 97无码欧美熟妇人妻蜜 | 国产香蕉视频在线播放 | 国产AV无码国产AV毛片 | 日韩精品人妻AV一区二区三区 | 成 人 黄 色 免费 网站无毒 | 国产在线观看首页123 | 无码人妻精品1国产婷婷 | 国产高清毛片 | 在线观看欧美一区 | 中文字幕久久精品波多野结 | 成人一级网站 | 2018国产大陆天天弄 | 日本中文字幕巨大的乳专区 | 乱肉合集乱500篇小说奶水 | 亚洲国产中文在线二区三区免 | 国产精品久久久久无码人妻精品 | 工口里番ACG全彩无码下拉式 | 美国一级大毛片 | 欧美色久 | 日韩精品视频美在线精品视频 | 午夜视频hd| 亚洲一区高清 | 国产1区2区三区不卡 | 又大又粗韩国色情A片绿色椅子 | 张津瑜和吕知樾事件 | 欧美囗交xx×bbb视频 | 插鸡网站在线播放免费观看 | 久久视频这有精品63在线国产 | 看全色黄大色黄大片爽一次 | 国产一区二区在线观看免费 | 国产成人精品必看 | 狠狠色丁香婷婷综合欧美 | 香蕉AV久久一区二区三区 | 在线涩涩免费观看国产精品 | 国产成人综合在线 | 国产综合有码无码中文字幕 | 国产精品久久久久久吹潮 | 99re免费在线视频 | 亚洲一区在线观看视频 | 免费观看又色又爽又黄的忠诚 | 性色吧| 8x永久在线视频 | 台湾MD豆传媒一区二区 | 无节操摄影部第一集第二集 | 久久老色鬼天天综合网观看 | 国产精品一级毛片不收费 | xxxx68日本老师hd| 亚洲三级在线 | 国产成人av在线免播放观看 | 影音先锋电影三级伦理 | 国产91无毒不卡在线观看 | 后入式啪gif动态图 葫芦娃视频成人APP | 日本一卡二卡三卡四卡无卡免 | 伦理片在线观看午夜伦理电影三级网 | 国产精品涩涩涩视频网站 | 日本成熟人妻理伦无码新片 | 国产自产v一区二区三区c | 色欲AV亚洲永久无码精品 | 天堂 亚洲 av 日韩 | 夜操| 8x国产在线观看 | 永久免费av网站 | 婷婷国产| 国产欧美精品一区二区色综合 | 国产精品人妻久久久久A片-百度 | 一个人看的www播放高清 | 亚洲色欲色欲www在线观看 | 四房色播在线电影 | 日本一卡精品视频免费 | 黄色片网站在线观看 | 亚洲熟女乱色综合一区小说 | 亚洲 欧美 国产 日韩 中文字幕 | 医生别摸啊摁摁 | 欧美bbw极品另类 | 92kyy福利合集 | 神马97| 男男高H啪肉Np文多攻多一受 | 日韩娇小性hd | 性欧美高清直播 | 农村黄a三级三级三级 | 中文字幕第1页 | 高清无码国内自拍视频 | 久久精品久久久 | 久久99久久99精品 | 久久艹免费视频 | 亚洲欧美综合中文 | 久久国产精品免费A片蜜芽 久久国产露脸老熟女 | 狠狠干综合 | 国产高清乱码又大又圆 | 精品高潮呻吟AV久久无码 | 日本乱子伦一区二区三区 | 我就色色综合网 | 美女被免费喷白浆视频 | 亚洲清色 | 最近韩国电影高清免费观看在线 | A一特级欧美毛片香蕉 | 花房姑娘HD免费高清版视频 | 欧美一级视频在线观看 | 97免费观看视频 | 另类色 | 国产无遮挡成人免费视频网站 | 小说区图片区激情区视频区 | 极品销魂一区二区三区 | 无套内谢少妇毛片A片免费视频 | 亚洲v天堂v手机在线 | 大片网站你懂得 | 夜夜影院播放器 | 欧美xvideosexo孕妇| 亭亭色 | 亚洲精品一区二区三区无码A片 | 一级片 mp4| 在线高清无码欧美久章草 | 中文在线不卡 | 久久综合气久久狠狠狠97色 | 色欲AV亚洲永久无码精品麻豆 | 日韩一区二区三区在线播放 | 久久网综合 | 青青草免费手机在线视频亚洲视频 | 亚洲国产精品一区二区三区在线观看 | 日韩一级视频 | 永久免费在线 | 中文字幕在线观看一区二区 | 宅男色影视亚洲人在线 | 欧美黄黄黄AAA片片 欧美黄色免费网址 | 毛片三级在线观看 | 777奇米影视笫四色88me久久综合 | 女人与公人强伦姧 | 性夜黄A片爽爽免费视频 | 夜夜操天天干 | 色噜噜影院 | 国产黄网在线 | 内射后射亚洲国产巨乳 | 性做久久久久久久免费看 | WWW国产亚洲精品久久 | 国产福利一区二区三区在线视频 | 大尺度做爰视频吃奶WWW | 日韩无码在钱中文字幕在钱视频 | 欧美性受xxxx黑人xyx性爽 | 异族tube欧美疯狂xxx | 亚洲欧洲日产国码久在线 | 免费的三级网站 | 五月丁香综合缴情六月 | 宝贝乖女好紧好深好爽老师 | chinesespank国产打屁股实践视频 | 国产成人综合洲欧美在线 | 艳妇荡岳丰满交换做爰 | 免费大片黄在线现看国语 | 色网站大全 | 午夜免费无码福利视频麻豆 | 久久免费大片 | 色桃花网| 热の综合热の国产热の潮在线 | 国产一区二区三区在线影院 | 狠狠色噜噜狠狠狠狠91 | 三级日本高清完整版热播 | 真实国产乱子露脸 | 成人色网站 | 国产AV一区二区三区最新精品 | 国产成人AV | 色综合久久88色综合天天提莫 | 十二寡妇肉床艳史邵氏小说 | 一个人看的视频观看免费高清 | 国产玩弄人妻出轨系列 | 男人一边吃奶一边做爰免费视频 | 欧美1卡一卡二卡三新区 | 在线观看日韩一区 | 日韩成人免费在线 | v天堂在线 | 性一交一乱一欲A片 | 国产超级乱淫视频播放免费 | 久久这里只有精品6 | 曰本人做爰大片免费观看一 | 成人久久18免费网 | 国产三级在线免费观看 | 九九视频在线 | 日本在线成人 | 国产剧情一卡二卡麻豆 | 国产成人精品视频一区 | 一区二区三区四区国产 | 欧美一区网站 | 免费a级网站 | 97一期涩涩97片久久久久久久 | 国内自拍第五一页 | 九九热热九九 | 一个人看的www免费观看视频 | 论理电影在线观看 | 999视频在线观看 | 视频一区国产在线第一页 | 一级做a爱过程免费视频超级 | 97国产露脸精品国产麻豆 | 人人澡人人澡人人看添欧美 | 在线精品视频免费观看 | 色狠狠干| 日本爽爽爽爽爽爽在线观看免 | 国产成人综合五月久久网址 | 在线观看视频网站www色 | 2020好看的中文乱码字幕 | 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 | 日韩一区二区三区精品 | 精品国产91乱码一区二区三区 | 精品国产一区二区三区四区勃大卷 | 亚洲 欧美 天堂 综合 | 国产欧美成人一区二区A片 国产女人乱人伦精品一区二区 | 日韩精品系列 | 扛起老师雪白双腿进入小说 | 亚洲一区免费看 | 国内露脸少妇精品视频 | 一区二区人妻无码欧美 | chinese spank网站| 国内精品久久久久影院优 | 欧美fxxx| 真人交合姿势性教育 | 青青草成人免费现看 | 日韩美女视频一区 | 国产欧美日韩精品二区 | 亚洲精品一区二区午夜无码 | 欧美中文字幕 | 成年女人在线视频 | 国产精品久久久久久久y | 真人一级一级特黄高清毛片 | 色欲AV亚洲午夜精品无码 | 无码一区国产欧美在线资源 | 欧美视频一区在线观看 | 国产在线综合色视频 | 亚洲欧美一区二区三区在线 | AV色蜜桃一区二区三区 | 国偷自产AV一区二区三区动漫 | 久久久久久久久影院 | 日本妇人成熟免费中文字幕 | 性一交一伦一A片免费看 | 99久久精品免费 | 日日干夜夜爱 | 男女一区二区三区免费 | 色婷婷在线视频观看 | 中文日韩亚洲欧美制服 | 在线观看v片免费视频 | 国产精品无码AV在线观小说 | 精品一卡2卡三卡4卡乱码精品视频 | 欧美乱偷在线 | 色婷婷在线视频观看 | 久久免费福利 | 蜜桃视频一区二区 | 成人全黄三级视频在线观看 | 熟女泄火一区二区三区在线 | 在线亚洲精品福利网址导航 | 国语自产拍在线观看偷拍 | 亚洲国产精品久久精品成人 | 中文自拍 | 激情亚洲AV在线一区二区三区 | 国产不卡高清在线观看视频 | 日本youjizz | 九九九色情成人免费网 | 日本a在线看 | 秋霞无码AV久久久精品 | 精品少妇一区二区三区A片 精品日本亚洲一区二区三区 | 欧美视频一区在线 | 91小视频在线 | 国产精品免费视频 | 四虎欧美| 影音先锋成人无码影院 | 久久久久一区二区三区 | 小色妞 | 欧美色99| 宝贝乘把腿张开让我添动态图 | 最近中文免费字幕6 | 色综合站 | 天天插夜夜操 | 精品综合久久久久久97超人 | 日韩高清成人毛片不卡 | jizz日本在线播放 | 奇米影视20247久久精品人人爽 | 中文 有码 亚洲 自拍 偷拍 | 日韩免费视频在线观看 | 成人xxxx| 又黄又爽内射视频巨乳 | 日韩欧美一区二区无码免费 | 日本在线视频免费观看 | 国产乱码卡二卡三卡4 | 国产精品AV一区二区三区不卡蜜 | 伦理片在线线看手机版韩国 | 国产苐1页影院草草影院 | 三级黄色片在线免费观看 | 日本永久视频 | 五月天丁香视频 | 最近免费中文字幕完整5 | 亚洲精品久久久久999666 | 伦理聚合在线观看 | xxxxhd欧美精品 | 国产浮力草草影院CCYY | 一区二区无码精品AV | 校园高H校草深一点H | 成人激情视频在线观看 | 久久精品极品盛宴观看 | 韩国无码又爽又刺激的A片 韩日午夜在线资源一区二区 | 小荡货好紧好爽奶头好大视频网站 | 四虎综合九九色九九综合色 | 国产xx肥老妇视频奂费 | 最新中文字幕在线播放 | 91久久线看在观草草青青 | 中文字幕卡二和卡三的视频 | 天天干夜夜曰 | 中文字字幕在线中文乱码2024 | 被伴郎的内捧猛烈进出H | 美女黄色片网站 | 在线综合亚洲欧美网站 | 囯产愉拍亚洲精品一区 | 9亚洲精华国产精华精华液 av大片 | 免费免费啪视频观看视频 | 欧美巨大另类极品video | 澡人人澡人澡人人澡天天 | 新人人影视| 99视频在线免费观看 | 中文乱码35页在线观看 | 看一级 | 日韩精品欧美激情亚洲综合 | 在线观看v片免费视频 | 无人高清视频免费观看在线下载 | 韩国女人高潮嗷嗷叫视频 | 国产麻豆一级在线观看 | 久久久国产精品网站 | 亚州老熟女A片AV色欲小说 | 天天干天天玩 | 久久精品国产波多野结衣 | 久青草网站 | 人妻熟女一区二区AV | 精品人妻无码一区二区三区狼群 | 亚洲一级免费毛片 | 国产在线视频在线 | 日日干夜夜爱 | 欧美成人性色xxxxx视频大 | 2024四虎影视最新免费 | 在线视频播放免费网站视频在线 | 一日本道不卡高清a无码 | 国产成人无码区免费内射一片色欲 | 做爰全过程免费的视频在线观看 | 久久国产三级精品 | 国产色情18一20岁片A片 | 狠狠色丁香婷综合久久 | 欧美性猛交A片索多玛120天 | 能在线观看的一区二区三区 | 中文字幕乱码熟女人妻水蜜桃 | 伦理电影在线视频网站天堂 | 开心四房播播网 | 国产色XX群视频射精 | 亚洲国产欧美中文手机在线 | 秋霞电影网理论片韩国在线观看 | 免费无码又爽又刺激高潮视频日本 | 噜妇插内射精品 | 第四色网站最新地址 | 中文字幕无码高清晰 | 免费大片黄国产在线观看 | 亚洲欧美一区二区三区四区 | 波多野结衣视频一区 | 日本日本熟妇中文在线视频 | 鲁一鲁色一色 | 久操app | 网址在线观看你懂的 | 天堂在线中文字幕 | 男男腐文污高干嗯啊快点1V1 | 2021国产精品一卡2卡三卡4卡 | 天天做天天爱夜夜爽毛片毛片 | 日本a视频在线观看 | 国产日韩精品视频无吗 | 丁香天堂网 | 日韩欧美伦理 | 原来神马电影琪琪网最新电视剧 | 免费精品美女久久久久久久久久 | 国产一区二区三区美女在线观看 | 蜜桃在线线免费观看视频 | 日本亚欧色情 | 久久99国产麻豆一区二区三区 | 国产成人手机视频 | 欧美日韩视频一区二区三区 | 久久婷婷国产剧情内射白浆 | 亚洲午夜免费视频 | 亚洲一区二区三区免费看 | 亚洲波多野结衣 | 免费观看一级欧美在线视频 | 日本在线亚洲 | 亚洲精品无码成人A片在线软件 | 老师你夹得好紧好爽动态图 | 色欲AV久久综合人妻无码 | 狠狠色丁香婷婷综合最新地址 | 欧美乱妇无码大片在线观看 | 波多野结衣在线免费播放 | M男食い ラストオーダー | 男女做爰猛烈啪啪吃奶真人免费 | 日韩毛片网 | 黄网入口 | 激情五月婷婷在线 | 91黄色大片| 免费一级做a爰片久久毛片潮 | 成人a影片在线观看 | 五月婷婷久久草丁香 | 波多野结衣中文字幕教师 | 人妻少妇被粗大爽.9797PW | 中文字幕熟女人妻理论片 | 成午夜精品一区二区三区精品 | 激情综合激情五月 | 九九久久九九久久 | 97在线视频免费观看 | 软玉娇香多肉1V3 | 伧理片午夜伧理片毛片日本 | 日本三级2019在线观看免费 | 亚洲有码转帖 | 大地影院_日本骚妇 | 日本激情网站 | 国产美女无遮挡裸体毛片A片 | 国产欧美日韩视频免费 | 国语自产拍在线观看偷拍在 | 欧美精品一区二区少妇免费A片 | 日本高清色本免费现在观看 | 麻豆传煤网站免费入口ios | 国产午夜亚洲精品一区 | 欧美成人香蕉网在线观看 | 日本精品人妻无码免费大全 | 97青草| 强摸秘书人妻大乳BD | 日韩人妻无码精品-专区 | 亚洲 欧洲 日韩 综合色天使 | 四虎影视免费观看高清视频 | 天天干夜夜操美女 | 日本三级香港三级人妇99 | 午夜寂寞院 | 老司机精品在线 | 成人黄网18免费观看的网站 | 欧美午夜春性猛交xxxx | 成人黄网站A片免费观看 | 免费一级毛片能看的 | 日本国产最新一区二区三区 | av天天看 | 久99久热只有精品国产男同 | 俺也去资源站 | 五月婷婷色丁香 | 午夜久久久久久禁播电影 | 亚洲国产日韩欧美高清片a 亚洲国产日韩精品一区二区三区 | 国产三级在线观看视频 | 一本色道在线久88在线观看片 | 奇米777狠狠色噜噜狠狠狠 | 五月婷婷六月激情 | 久久久久久电影 | 在线观看免费国产 | 婷婷爱五月 | 人人免费人人看 | 性猛交xxxxx按摩中国 | 草莓丝瓜视频下载-丝瓜视18岁 | 我国产码在线观看AV哈哈哈网站 | 亚洲第一成人无码A片 | 久久夜夜肉肉热热日日 | 亚洲产国偷V产偷V自拍色情 | 菠萝蜜BLM新区口 | 免费污污网站 | 免费成人在线观看 | 99热久久精品国产一区二区 | 国产成人精品视频午夜 | 奇米狠狠一区二区三区 | 色综合小说久久综合图片 | 一二三四免费中文字幕 | 国语高清精品一区二区三区 | 午夜www在线观看完整版视频 | 国精产品一区一区三区有限公司 | 六月成人 | 国产精品久久久久人妻无码 | 欧美夜夜操 | 国产精品成人观看视频免费 | 久久精品亚洲日本波多野结衣 | 欧美黄色免费网址 | 波多野结衣a∨免费观看 | 中芯国际回应涉军传闻 | 国产黄A片免费网站免费 | 久久久综合九色综合中文字幕 | 丁香五月综合缴情综合 | 亚洲AV综合AV国产AV百度云 | 在线黄视频网站 | 国产福利视频情侣视频 | 91色交视频 | 免费在线播放黄色 | 丰满在线 | 娇妻在舞厅被别人进入 | 夜夜操天天爽 | 色婷五月 | 米奇第四色色情 | 国产电影无码午夜在线播放 | 一个人看的视频观看免费高清 | 人体内射精一区二区三区 | 一级毛片完整版免费播放一区 | 国产精品人妻免费精品 | 美美哒免费高清影院在线直播 | 中文字幕日本亚洲欧美不卡 | 婚后1v1啪啪做H高甜 | 四虎 在线播放 | 亚洲精美视频 | 欧美sss| 国产亚洲精品AV麻豆狂野 | 中文国产 | 久久re视频这里精品一本到99 | 国产极品自拍 | 香蕉99 | 免费在线视频一区 | 2021久久99国产熟女人妻 | 亚洲v欧美 | 亚洲国产系列久久精品99人人 | 四川BBB搡BBB爽爽视频 | 涩涩动漫网站入口 | 日韩精品一卡2卡3卡4卡5卡 | 伦理片 a在线线版韩国 | 婷婷综合久久狠狠色成人网 | 日韩黄色大全 | 黄网站观看| 亚州久久久久区1区2少妇 | 亚洲免费人成 久久 | 欧美特黄一区二区三区 | AV无码国产精品午夜A片 | 2024琪琪午夜理论电影网 | 么公一夜我要我八次 | 国产乱人偷精品人妻A片 | 亚洲精品成人AV在线观看爽翻 | 老司机久久精品视频 | 国产精品青青在线麻豆 | 96免费精品视频在线 | 色www.亚洲免费视频 | 精品乱码一区二区三区四区 | 天天擦天天干 | 99久久www免费人成精品 | 好硬好湿好大再深一点动态图 | 国产精品20247人妻精品冫 | 国产精品色情国产三级小说 | 免费观看WWW成人A片 | 久久青青无码AV亚洲黑人 | 黄色插插插| 无码精品人妻一区二区三A片 | 亚洲欧美一区二区三区麻豆 | 中文字幕乱码亚洲无线三区 | 最近最新中文字幕大全免费版下载 | 久久a 热6| 久久AV无码乱码A片无码波多 | 国产乱对白精彩在线播放 | 日本国产亚洲 | 深夜在线视频免费网址 | 深夜毛片 | 国产精品乱码久久久久久软件 | av伦理天堂| 色狐狸精品网 | 伦理片在线观看午夜伦理电影三级网 | 最近最新中文字幕免费1 | 国产亚洲综合网曝门系列 | 巨胸喷奶水WWW冈哺乳期 | 日本A片成人片免费视频生活片 | 国产人妻人伦精品熟女麻豆 | 久久综合九色综合桃花 | 日韩国产三级 | 麻豆A片爽爽歪歪爽爽视频看看 | 丰满熟妇被掹烈进入高清片 | 日韩一区二区在线免费观看 | 精品乱码久久久久久中文字幕 | 色情的人妻味道BD完整版 | 巜疯狂的少妇4做爰BD播放 | 婷婷成人丁香五月综合激情 | 日韩字幕在线 | 国产不卡视频在线观看 | 我是唱作人第二季 | 日本免费网址大全在线观看 | 窝窝视频成人影院午夜在线 | 综合色情| 九九视频在线观看视频6 | 欧美日韩精品一区二区三区视频在线 | 国产又黄又刺激的免费A片小说 | 中文无码有码亚洲 欧美 | 亚洲欧美视频 国内自拍 | av网站免费线看 | 狠狠色丁香久久综合五月 | 九九99热久久999精品 | 欧美色xx| 麻豆乱码1区2区新区 | 国产精品免费综合一区视频 | 国内久久久久久久久久 | 午夜视频在线瓜伦 | 按摩高潮A片一区二区三区 澳门永久av免费网站 | 成人在免费观看视频国产 | 亚洲AV久久综合无码东京 | 天天操天天干天天爱 | 黑人巨大进入白人美女视频 | 综合色爱| 国产福利一区二区麻豆 | 国产一区二区三区四区精华 | 黄色免费在线观看网站 | 精品国偷拍自产在线观看 | 免费看日韩A片无码视频软件 | 高清一区二区不卡视频 | 天堂tv亚洲tv日本tv欧洲 | 中文字幕无码家庭乱欲 | 波多野结衣中文字幕教师 | 97视频免费观看 | 乱码精品一卡二卡无卡 | 日韩三级伦理片 | 色偷偷WWW.8888在线观看 | 久久国产精品人妻无码 | 亚洲欧美日本国产 | 性久久久久久久久波多野结衣 | 久久免费区一区二区三波多野 | 91日韩在线 | 亚洲欧美色鬼久久综合 | 99久久亚洲综合精品网站 | 九一制片厂果冻传媒 | 欧美性猛交AAA片免费观看 | 将军边走边挺进她H树林 | 色情免费视频自由 | 国产精品国产三级国产潘金莲 | 日日夜夜天天干干 | 日韩精品视频在线免费观看 | 黄网址在线永久免费观看 | 99视频30精品视频在线观看23245 99视频免视看 | 91在线激情在线观看 | 他揉捏她两乳不停呻吟A片 她也色在线视频站 | 免费看国产成人无码A片 | 亚洲欧美自拍色综合图 | 久久精品站 | 国产免费无码成人A片在线观看 | 日韩一区二区在线观看视频 | 在线观看日韩精品 | 国产人妻人伦精品潘金莲 | 国产乱码卡一卡2卡三卡四 国产乱码一卡二卡3卡4卡网站 | 久久福利网站 | 三区综合是哪三区 | 狠狠色噜噜狠狠狠狠98 | 日日夜人人澡人人澡人人看免 | 国产99久久九九免费精品无码 | 日本中文字幕视频 | 国产日产欧产精品精品推荐在线 | 91成人午夜在线精品 | 亚洲午夜在线观看 | 最近免费中文字幕大全免费版视频 | 三级中文字幕 | 国产永久视频 | 熟女毛茸茸 | 久婷婷 | 欧美在线视频精品 | 欧美大成色www永久网站婷 | 爱啪网亚洲第一福利网站 | 一区二区三区美女视频 | 欧美躁天天躁无码中文字 | 60岁老年熟妇在线无码 | 中文精品一区二区三区四区 | 亚洲第一福利视频 | 97蜜桃网小说 | 久久精品国产亚洲麻豆小说 | 亚州色区| 在线观看国内自拍 | 无码人妻深夜拍拍AAA片 | 成熟人妻AV无码专区A片麻豆 | 班长你轻点灬爽灬宝贝一 | 日韩经典欧美精品一区 | 91精品国产亚一区二区三区 | 精品国产午夜福利在线观看 | 日本人妻精品免费视频 | 黄色免费看片网站 | 国产精品永久免费自在线观看 | 国产永久精品 | 亚洲欧美一区二区三区导航 | 人妖另类亚洲xxxx | 18禁无遮挡羞羞污污污污网站 | 免费一级特黄特色大片在线观看 | 玩弄丰满奶水的女邻居 | 香草乱码一二三四区别 | 国产日韩欧美三级 | 国内揄拍国产精品人妻门事件 | 亚洲欧美日韩视频一区 | 亚洲人天堂 | 强壮公次次弄得我好爽A片 强壮公弄得我次次A片 | 在线观看的免费视频 | 亚洲 日本 欧美 中文幕 | 黄色 在线 | 成年人网站黄 | 天天色天天干天天射 | 人人爽久久久噜噜噜婷婷 | 国产亚洲精品久久久久婷婷瑜伽 | 99久久免热在线观看 | 色呦呦网站 | 下身被黑人猛然进入 | 欧美黑人hd| 日本一本免费线观看视频 | 苍井空无码换线观看 | 日本青草视频 | 亚洲日本va中文字幕久久 | 欧美乱妇乱码大黄AA片 | 一区二区三区好的精华液杨朝越 | 欧美午夜乱理片无码视频 | 2024亚洲 欧美 国产 日韩 | 无码中文字幕免费一区二区蜜桃 | 国产精品久久综合桃花网 | 国产内射爽爽大片 | 国产精品青青在线麻豆 | 久久a 热6 | 丰满少妇69激懒啪啪无码 | 日本永久免费 | 亚洲国产精品久久网午夜 | 亚洲精品久久久久无码精品 | 日韩无码在钱中文字幕在钱视频 | 日韩精品无码二三区A片 | 国产精品久久久久久日本一道 | 97色轮| 日日碰狠狠躁久久躁婷婷 | 国产精品国产三级国产普通话对白 | 亚洲男女网站 | 手机播放一卡二卡三在线观看 | 久久精品久噜噜噜久久 | 久久精品国产日本波多野结夜 | 久久久久久88色偷偷 | 亚洲黄色性视频 | 欧美高清老少配性啪啪 | 最好韩国日本免费高清 | 又爽又色又舒服A片免费 | 欧美日韩一二区旡码高清在线 | 国产精品久久久久久久免费大片 | 偷拍自伦2018 | 在线丝袜视频 | 真人一级毛片国产 | 亚洲亚洲色爽免费视频 | 国产欧美一区二区精品仙草咪 | 国产乱子伦农村叉叉叉 | 99热成人精品国产免男男 | 日产乱码卡1卡2卡三免费 | 久久久国产99久久国产首页 | 欧美另类性视频在线看 | 中文无码有码亚洲 欧美 | 日本韩无专砖码高清 | 少妇人妻千子深太紧了A片 少妇爽滑高潮几次 | 美女扒开尿口让男人桶进 | 91亚洲自偷手机在线观看 | 六月丁香婷婷综合 | 国产精品99久久久久久宅男 | 岛国在线无码高清视频 | 97精品国产91久久久久久 | 影音先锋第一页 | 精品久久伦理中文字幕 | 亚洲无人区码二码三码区别图 | 色欲人妻AV久久无码精品 | 97碰在线看片免费视频 | 亚洲AV色情偷拍精品 | 97超碰免费人妻中文 | a√视频 | 最近中文字幕高清免费大全1 | 婷婷综合久久中文字幕 | 欧美乱码卡一卡二卡四卡免费 | 成人免费永久在线观看视频 | 91热久久免费精品99 | 国产妇女乱一性一交 | 国产一区二区三区四区五在线观看 | 久久婷婷五月国产色综合 | 最新国产三级久久 | 亚洲 校园 欧美 国产 另类 | 日韩视频不卡 | 亚洲品质自拍 | 天天干夜夜看 | 亚洲色欲色欲WWW在线丝 | 麻豆WWW传媒入口 | 欧美深夜| 国产a国产片 | 日本中文在线观看 | 中文精品一区二区三区四区 | 免费乱理伦片在线观看八戒 | 久久草这在线观看免费 | 一级特黄性色生活片一区二区 | 欧美a一片xxxx片 | 亚洲国产精华液网站W | 日本韩国欧美在线 | 99久久99久久精品国产片果冻 | 日本不卡视频在线观看 | 九一抖音成长人版破解安装 | 国产午夜福利视频一区二区32页 | 日本午夜大片a在线观看 | 毛茸茸成熟亚洲人 | 原神美女被超污app 越南护士毛茸茸性 | 天堂а√中文最新版地址 | 国产成人综合网在线观看 | 免费无码毛片一区二区三区A片 | 水蜜桃视频免费观看视频 | WWW.亚洲最大夜色伊人 | 日韩综合在线视频 |