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

ugmder

13 Oct 2025(atualizado 13/10/2025 às 12h50)

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

Temas

Compartilhe

DF bate novo recorde de temperatura, com 36,8°C; há previs?o de chuva forte para próxima ter?a-feira (8)'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 quais os números da mega-sena que saiu hojeits 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

Xi_Jinping_-_BBC_News.txt

Ceramica artesanal conquista espa?o cultural em Petrópolis conhecimento e os abrangente ponto quente.

GRáFICOS

nos eixos

'Overwhelming support' for Dolly Mavies after JD Vance walkout.txt

égua fica presa em buraco após chuva forte no DF; veja vídeo enciclopédia e os explorar ponto quente.

Navegue por temas

Diplomacia do elogio: europeus d?o aula magistral de como lidar com Trump em cúpula na Casa Branca Opera??o 'Independência 2025' do Detro-RJ refor?a fiscaliza??o em nove terminais rodoviários do estado Mutir?o Estadual da Renegocia??o do Consumidor chega a 12 cidades do RJ Disque Denúncia pede informa??es sobre acusado de homicídio e tráfico de drogas em Italva Moradora de Belém diz que governo ofereceu R$ 7 mil para demolir sua casa e concluir obra da COP 30 Aluguel de R$ 30 mil, três piscinas: as mans?es do chefe do PCC que vive 'livre' na Bolívia VíDEO: chuva forte alaga ruas do DF; Defesa Civil emite alerta Fevereiro chuvoso: primeira semana do mês continua com alta umidade, calor e chuvas no DF Mergulho nas águas do Rio: Instituto Mar Urbano leva habitat marinho com realidade virtual para a Rio Innovation Week Disque Denúncia pede informa??es sobre acusado de homicídio e tráfico de drogas em Italva
麻豆果冻传媒2024精品传媒一区下载 | 国产精品视频一区牛牛视频 | 亞洲AV女優無碼人妻濑亚美莉 | 亚洲专区视频 | 麻豆一二三四区乱码 | 99爱视频精品免视看 | 又大又硬又粗再深一点 | www.色综合 | 性久久久久久久久波多野结衣 | 国产区福利 | 又长又大又粗又硬3p免费视频 | 国产熟妇无码一区二 | 波多野结衣中文字幕2022免费 | 天堂资源中文最新版在线一区 | 色撸橹图片2015最新版 | 欧美一区二区三区高清视频 | 伊人福利在线 | 国产乱国产乱老熟300部视频 | 婷婷色九月 | 91香蕉国产线观看免 | 精品一卡2卡三卡4卡乱码免费 | 欧美日韩另类在线观看视频 | 嫩草院一区二区乱码 | 永久无码日韩A片免费看麻豆精品 | 东京热无码中文字幕av专区 | 麻豆传媒AV在线播放 | 久久99久久精品97久久综合 | 美女祼胸图片 | 国产手机在线观看精品视频 | 又大又黄又爽免费看A片 | 日本熟妇乱人伦A片一区 | 久久免费看少妇高潮A片JA | 最好免费观看高清视频直播小说 | 大陆一级毛片免费视频观看i | 乱肉合集乱500篇小说书架下载TXT | 啪啪啪视频在线观看 | 亚洲 日韩 在线 国产 精品 | 日本哎哎哎视频免费1000 | 亚色图 | 理论片带中文2019 | 国产精品第3页 | 精品欧美一区二区在线观看欧美熟 | 在线观看免费视频日本高清 | 久久6| 人妻体体内射精一区二区 | 国产AV一区二区三区传媒 | 人人插人人澡 | 国产精品A久久久久久久久 国产精品AV国片偷人妻麻豆 | 日韩国产人妻一区二区三区 | 婷婷射精AV这里只有精品 | h片在线观看免费 | 日韩一卡2卡三卡4卡精品 | 亚洲人成色20242024老人头 | 国产亚洲欧美高清在线 | 青草园网站在线观看 | 久久国内精品视频 | 强被迫伦姧高潮无码A片漫画 | 欧美卡2卡4卡无卡免费 | 久久青草国产手机看片福利盒子 | 苍井空大尺寸视频大全 | 一区二区三区视频在线观看 | 成人激情视频在线 | 手在线播放波多野结衣 | 午夜高清在线无码 | 色情图插插插 | 曰本护士毛茸茸 | 樱花树下未删减在线观看 | 天天综合网天天综合色 | 国产成人综合亚洲动漫在线 | 精品人妻伦九区久久AAA片 | 免费观看又色又爽又黄的 | 亞洲AV女優無碼人妻濑亚美莉 | 诱受H嗯啊巨肉舍友1V1 | 中文字幕日本一区 | 男人把女人桶到爽免费看视频 | 无翼乌之全彩爆乳口工不知火舞 | 福利500精品导航大全 | 国产91青青成人a在线 | 亚洲国产精品日本无码网站 | 在线91精品亚洲网站精品成人 | jizz日本| 国产欧美一区二区三区久久 | 性加拿大高清xxxxx | 日韩城人网 | 国产精品妖精视频 | 一区二区视频传媒有限公司 | 日本护士做xxxxxx视频 | 88av视频在线| 内射干少妇亚洲69XXX | 91香蕉视频免费 | 五月婷婷久久 | 五月色丁香综合成人网 | 婷婷综合另类小说色区 | 国产只有精品 | 欧美三级黄色 | 成人免费播放视频20242024 | 亚洲美女久久 | 大乐透23105晒票 | 乱肉杂交怀孕系列小说BL | 国产精品夜夜春夜夜 | 被特种兵啪到哭BL | 成人天堂资源WWW在线 | 中文字幕AV在线一二三区 | 日韩午夜欧美精品一二三四区 | 色即是空3 qvod| 色一情一乱一伦一区二区三区 | 免费看少妇高潮A片特黄 | 秋霞最新高清无码鲁丝片 | 天天撸在线影院 | 免费无码毛片一区二区三区A片 | 中文精品99久久国产 | 国产区免费 | 女人十八毛片A级十八女人 女人十八毛片A片久久18 | 欧美国产大片 | 国产99热在线观看 | 夜夜操天天摸 | 日本免费在线观看视频 | 麻豆精品人妻一区二区三区蜜桃 | 日本激情网 | 久久精品欧美日韩精品 | 中文字幕2020 | 四虎永久免费观看在线 | 99久久免费视频6 | 亚洲AV无码精品蜜桃 | 亚洲熟妇色自偷自拍另类 | 韩国三级一区 | 欧美日本韩国 | 99视频免视看 | 2021乱码精品1区2区3区 | 2022国产精品福利在线观看 | 肉乳乱无码A片观看免费 | 亚洲欧美日韩精品永久在线 | 91在线精品中文字幕 | 麻豆文化传媒免费网站 | 婷婷电影网 | 波多野结衣中文字幕在线播放 | 精品无码久久久久久久动漫 | 在线看播放免费网站 | 久久精品亚洲综合一品 | 久久中文骚妇内射 | 欧美另类老妇 | 日产精品卡二卡三卡四卡乱码视频 | 亚洲永久精品AV在线观看 | 精品中文字幕一区在线 | 免费一级做a爰片久久毛片 免费一级特黄欧美大片久久网 | 放荡勾人h的辣文 | 国产黄色网 | 性瘾荡乳H古代 | 视频一区中文字幕日韩专区 | 男人的天堂亚洲一线AV在线观看 | 精品自拍一区 | 91欧美 | 8天堂资源在线 | 亚洲一区二区三区高清 | 国产日产欧产综合 | 国产一级一级一级国产片 | 国产精品 日韩 | 日日噜噜夜夜狠狠扒开双腿 | 久久a 热6| 图片区乱熟图片区小说 | 999精品国产人妻无码系列久久 | 国产一区二区三区乱码在线观看 | 日日碰狠狠躁久久躁综合网 | 欧美日韩亚洲国产欧美电影 | 国产精品久久久久久久免费 | 欧美视频日韩视频 | 99国产午夜精品一区二区 | 亚洲午夜在线播放 | 国产在线观看精品一区二区三区91 | 一级毛片在线视频 | 成人网大全 | 日本三级韩国三级韩级在线观看 | 影音先锋影av色资源网 | 美景之屋4免费观看高清 | 国产精品人妻无码77777 | 99久久精品免费看国产一区二区 | 亚洲精品久久一区二区三区2024 | 色天使色妺妺网站 | 国产v视频 | 国内免费在线视频 | 又大又粗成人A片免费看 | 日本中文字幕永久在线 | 台湾十八成人 | 久久99精品久久久久久 | 精品婷婷乱码久久久久久日日 | 日韩欧美一区二区三区免费看 | 品色堂新网址 | 高强度辣爽文 全是肉NP | 香港三级日本三级韩国三级 | 国语自产拍在线观看偷拍在 | 国产精品久久久久久人妻精品A片 | 91热久久免费精品99 | 色噜噜影院 | 久久96国产精品久久久 | 在线观看免费播放黄污 | 啪啪东北老熟女45分钟 | 任我鲁精品视频精品 | 国产福利一区二区三区在线视频 | M字腿绑椅子玉势笔撑夹住双小说 | 无码人妻精品一区二区三区蜜臀 | 亚洲欧美片 | 四虎成人网 | 一本到在线高清观看 | 全黄H全肉短篇禁乱NP慕浅浅 | 久射久| 亚洲欧美综合在线中文 | 成熟妇女A片高潮免费看 | 色中色最新网址 | 日韩精品视频美在线精品视频 | 和少妇邻居做爰伦理 | 99热.com | 韩日视频在线观看 | 综合自拍亚洲综合图区Av | 欧美看片| 国产电影一区二区三曲爱妃记 | 国产精品人妻免费精品 | 国产偷拍一极视频 | 毛片免费网| 又色又爽又黄的视频网站免费 | 日韩夜夜操 | 大香线蕉97久久 | 亚洲 欧美 国产 日韩 中文字幕 | 欧美综合社区 | 日本熟妇毛茸茸xxxxx | 免费播放黄色 | 久久精品国产精品亚洲蜜月 | japan hd xxxxx| 亚洲欧美中文字幕5发布 | 色的视频在线观看免费播放 | 色翁荡熄又大又硬又粗又视频图片 | 免费国产在线观看老王影院 | 国内一级片| 色妞基地 | AV每日更新 在线观看 | 老熟女强人国产在线 | 欧美色欧美亚洲另类二区 | 色情 免费 视频在线观看 | 久操综合在线 | 国产亚洲精品久久久闺蜜 | 国产在线拍揄自揄视频菠萝 | 狠狠狠的在啪线香蕉 | 成人毛片18女人A片 成人毛片18岁女人毛片免费看 | 真实国产乱子伦视频对白 | 欧美日韩综合无码中文字幕 | 日韩欧美视频一区 | 亚洲国产一线二线三线 | 一个色综合国产色综合 | 欧美一区二区三区免费看 | 日韩手机视频 | 古代一女被迫n男文肉辣 | 度年华在线观看全集免费播放 | 最新伦理电影_伦理电影 | 日本在线视频一区二区 | 亚洲天堂视频在线免费观看 | 日本三级香港三级久久99 | 最近中文字幕完整视频 | 欧美成人免费做真爱A片 | 最近新中文字幕大全高清 | 麻豆国产自制在线观看 | 麻豆妓女爽爽一区二区三 | 久久老色鬼天天综合网观看 | 日韩欧美三级在线 | 九九精品视频在线观看 | 日本一二三区在线视频 | 中文字幕一区二区三A片 | 欧美中文字幕在线看 | 天天操天天射天天操 | 在线观看国产精品一区 | 日韩欧美中文字幕在线播放 | 欧日韩一区二区三区 | 国产精品一区二区三区四区五区 | 日本黄色大片网站 | 看一级毛片女人洗澡 | 国产精品v欧美精品v日本精品动漫 | 色狠狠一区二区 | 91久久精品国产免费一区 | 樱花草无码专区日本 | 饥渴偷公乱第400章 激烈娇喘叫床声床震爽文 激情aa视频试看免费 | 天美传媒新剧国产剧影视公司 | 亚洲精品一区二区三区无码A片 | 少妇大叫太大太粗太爽了A片 | 国产精品成人久久久 | 欧美性高清极品猛交 | 黄网免费观看 | 高清无码午夜福利在线观看 | 色哟哟在线观看入口 | 在线播放国产区 | 亚洲日本黄色 | 国产亚洲精品久久久久久久久动漫 | 动漫成年美女黄漫视频 | 最近韩国日本免费高清观看 | 亚洲国产中文在线视频免费 | 五月综合激情网 | 听党话跟党走始终是共青团坚守的 | 欧美日本免费 | 亚洲精品久久久久高潮 | 九九热视频免费在线观看 | a级片观看 | 欧美一级片免费观看 | 天天射天天干天天 | 国产精品无码人妻99999 | 四川少妇大战4黑人 | 3d肉蒲团之喜爱夜蒲 | 日本又黄又爽又色又刺激的视频 | 51社区精品视频 | 男人使劲躁女人过程A片 | 一级毛片视频免费 | 久久精选视频 | 亚洲国产一区二区三区四区色欲 | 无套内谢少妇毛片A片小说色噜噜 | 精品 在线 视频 亚洲 | 国内精品免费 | 色综合久久久久久久久久久 | 九月婷婷人人澡人人添人人爽 | 一区二区三区 日韩 | 色丁香婷婷 | 影视AV久久久噜噜噜噜噜三级 | 国产亚洲精品久久综合阿香 | 美女午夜色视频在线观看 | 在线观看网站国产 | 亚洲精品中文字幕乱码三区 | BT天堂网WWW资源 | 亚洲天堂91 | caoporn视频在线观看 | 中文字幕精品在线视频 | 无码精品人妻一区二区三区颖A片 | 精品伦理| 日本A片色情AAA片WWW | 国精产品一区二区三区有限 | 一区二区影院 | 涩涩97 | 日韩a视频| 最好看十大无码AV | 特级做A爰片毛片免费看无码 | 在线观看国产精选免费 | 少妇人妻偷人精品无码视频新浪 | 欧美视频综合 | 老师我好爽再深一点好舒 | 免费看成人频视在线视频 | 中文字幕第一页在线播放 | 日韩视频 中文字幕 视频一区 | 老牛无码人妻精品1国产 | 国产成人精品综合久久久 | 波多野一区 | 久久久国产一区二区三区四区小说 | 国产亚洲熟妇在线视频 | porn在线精品视频 | 巜疯狂的少妇4做爰 | 成人无码A片在线观看 | 亚洲天天看 | 三级韩国三级日产三级 | 亚洲国产艾杏在线观看 | 日韩精品无码一区二区免费A片 | 国内免费在线视频 | 69SEX久久精品国产麻豆 | 波多野结衣免费线在线 | 成熟女人毛片WWW免费版在线 | 日本高清不卡免费 | 尤物tv在线 | 精品一二三区久久AAA片 | 神马午夜羞羞AV | 五月婷婷丁香综合 | 超乳w真性中出し冲田杏梨101 | 777婷婷天堂综合区色吧 | 青青青国产免费线在 | 国产三级精品三级在专区 | 色婷婷免费视频 | 亚洲第一卡二新区乱码 | 免费韩国一卡二卡三卡四卡 | 亚洲第色情一区二区 | 精品国产乱码久久久久久夜深人妻 | 免费在线观看黄网站 | 又大又爽又黄无码A片小说 又大又硬又粗做大爽A片 | 风韵丰满熟妇啪啪区老熟熟女 | 色拍拍欧美视频在线看 | 人人爱夜夜爽日日做视频 | 搡女人真爽免费视频大全软件 | 青草视频免费观看在线观看 | 视频在线观看国产 | AV亚洲AV永久无码精品网 | 国产香港日本三级在线观看 | 国产亚洲福利在线视频 | 欧美一级视频精品观看 | 成人免费看黄网站yyy456 | 韩剧无情都市 | 日韩精品一区二区三区中文字幕 | 日韩精品中文字幕在线观看 | 麻豆出品视频在线 | www.网站黄网站 | 男人午夜视频在线观看 | 欧美videosex性欧美成人 | 91蝌蚪视频在线观看 | 玉蒲团5之初入桃源洞2 | 午夜精品久久久久久久99 | 黄在线网站 | 日韩不卡一卡二卡3卡四卡2021免费 | 最近中文字幕在线中文高清版 | 免费无毒a网站在线观看 | 全部免费的毛片视频观看 | 亚洲色拍偷拍精品一区二区麻豆 | 性欧美巨大hd | 日日噜噜爽爽狠狠视频 | 日日噜噜夜夜狠狠久久丁香婷婷 | 欧美性色黄大片四虎影视 | 五月亭亭六月丁香 | 亚洲AV无码乱码A片无码18禁 | 久久免费看少妇高潮A片特无毒 | 韩国理伦片一区二区三区在线播放 | 色综合久久精品亚洲国产消防 | 在线播放免费看高清大片 | 黄网站色成年片在线观看 | 亚洲AV成人一区二区三区在线看 | 国产精品久久欧美一区 | 日本一二三区视频在线 | 男女裸体AAAAA片 | 亚洲AV无码专区A片奶水 | 亚洲伦理片 | 日本xxwwxxww视频免费丝袜 | 亚洲精品久久AV无码蜜桃 | 在免费JIZZJIZZ在线播放视频 | 久久精品麻豆日日躁夜夜躁妓女 | 三级理论中文字幕在线播放 | 99re99热| 在线日本v二区不卡 | 日本护士喷水 | 甜性涩爱下载地址 | 天堂岛最新版在线bt天堂 | 免费片观看 | 性色AV一区二区三区咪爱四虎 | 免费三级网站 | 好硬啊进去太深了A片 | 性欧美高清短视频免费 | 91免费国产精品 | 麻豆视传媒官方网站入口 | 好硬啊进得太深了A片无码公司 | 2018天堂网 | 免费大片黄在线现看国语 | 视频二区 调教中字 知名国产 | 成年视频xxxxx在线网站 | 午夜福利不卡在线视频 | 国产亚洲精品久久久久久小说 | 精品久久久一二三区 | 全色qvod资源网 | 在线网站 | 18禁无遮挡爽爽爽无码视频 | 麻豆乱码国产一区二区三区 | 禁止的爱6浴室吃奶中文字幕 | 国产手机在线自在拍 | 欧洲卡2卡3卡国产乱码 | 国产在线观看免费视频软件 | 久久久高清国产999尤物 | 欧美人善交videosg | 2020年日本高清一卡二卡三卡四卡 | 波多野结衣免费免费视频一区 | 狠狠狠色丁香婷婷综合久久五月 | 亚洲精品美女偷拍一区二 | 成人禁片免费播放35分钟 | 久久这里只有精品无码3D | 成人性生交A片免费看麻豆 成人性生交大片免费看中国A片 | 欧美a级黄| 好爽又高潮了毛片免费下载 | 一本本月无码- | 激情 亚洲 欧美 另类 小说 | 免费真实播放国产乱子伦 | 益日韩欧群交P片内射中文 樱花草无码专区日本 | 日韩熟女精品一区二区三区 | 老外的一级大黄色毛片 | 亚洲熟妇无码乱子AV电影 | 2019中文字幕在线观看 | 波多野结衣办公室jian 情 | 亚洲AV國產国产久青草 | 大JI巴放进女人免费视频 | 日韩精品久久久肉伦网站 | 久久99精品久久久久久综合 | 内射女校花一区二区三区 | 99久久免费看少妇高潮A片 | 人妻奶水人妻系列 | 加勒比テカ痴女の猛烈交尾 | 日本精高清区一 | 国产网站黄色 | 荡女小姿的yin乱生活 | 亚洲AV永久无码麻豆A片 | 日本99久久九九精品无码 | 一级毛片在线视频 | 欧美亚洲精品一区二三区8V | 亚洲v日本v欧美v综合v | 日韩欧美一区二区三区在线 | 999久久久成人A片精品免费看 | 久久久日韩精品一区二区 | 黄在线网站 | 国产人妻无码专区精品 | 色影音先锋av资源网 | 欧美视频在线观看免费 | 人人干国产 | 天天干天天操天天做 | 黄网站在线观看视频 | 日韩精品一区在线观看 | 在线萝福利莉18视频 | 91欧美| 亚洲精品日本 | 欧类av怡春院 | 国产成a人亚洲精v品久久网 | 欧美日韩视频二区三区 | 爱色.com| 国产美女啪啪 | 亚洲免费高清视频 | 一级做a爱过程免费视频时看 | 色之综合天天综合色天天棕色 | 琪琪五月天综合婷婷 | 秋霞无码AV久久久精品 | 日本三级全黄 | 最近中文字幕在线看免费完整版 | 欧美日韩在线观看视频 | 激情电影色影音先锋 | 精品综合久久久久久99 | 久久发布国产伦子伦精品 | 神马影院午夜伦理限级 | 亚洲精品久久一区二区三区2024 | youyjzzcom最新欧美| 日本国产成人精品无码区在线网站 | 无码一区二区三区曰本A片 无码一区国产欧美在线资源 | 久久久久久一级毛片免费野外 | 免费又黄又爽A片免费看 | 免费一区二区三区无码A片 免费又粗又硬进去好爽A片视频 | 亚洲AV久久无码精品影视 | 葫芦娃.combo深夜释放自己 | 免费精品一区二区三区在线观看 | 免费黄色电影网 | 国产美女一级视频 | 久久久国产人妻精品 | 国产久热在线观看视频 | 国产乱子伦视频大全 | 色mimi| 婷婷综合久久中文字幕 | 免费看成人AA片无码视频吃奶 | 天天干夜夜做 | 国产黄色片网站 | 婷婷综合 | 亚洲精品AV一二三区无码 | 妞色网 | 久久精品国产72精品亚洲 | 男同免费视频大全69 | 2021年无线乱码高清播放 | 看色情小说 | 丝瓜成视频人APP下载网站 | 无码任你躁久久久久久久 | 最新欧美人妖hdxxxx | 国产欧美久久久精品 | 黄色动态网站 | 雯雅婷4去码截图 | 国产精品久久综合桃花网 | 丁香花丁香五香天堂网 | 精品福利视频导航 | 天天拍天天干 | 国产免费内射又粗又爽密桃视频 | 岳的下面好紧好爽视频 | 久久大蕉香蕉免费 | 国产肥白大熟妇BBBB | 一级黄色毛片播放 | 亚洲欧洲日韩极速播放 | 国产免费内射又粗又爽密桃视频 | 少妇性BBB搡BBB爽爽爽四川 | 欧美在线三级艳情网站 | 欧美日韩一区二区三区四区 | 国产在线免| 一本色道久久爱88AV俺也去 | 日本不卡在线一区二区三区视频 | 噜噜色图 | 被公侵犯肉体中文字幕电影 | 色妞网欧美 | 国产色精品久久人妻 | 九九这里有精品 | 波野多结衣在线 | a级黄色片网站 | 色欲人妻AAAAAAA无码 | 精品人妻无码一区二区三区狼群 | 婷婷色九月综合激情丁香 | 女医学护士一级毛片 | 中国国语对白高潮A片 | 自拍区偷拍亚图片小说 | 久久久久国产一级毛片高清板 | 在线免费观看波多野结衣 | 自拍 另类 图片区 亚洲 | 大量国产激情视频在线观看 | 成人电ying | 国产手机精品一区二区 | 亚洲黄色免费观看 | 天天在线天天综合网色 | 美女祼体添鸡把图片 | 专干老熟女A片 | 在线观看免费网址大全 | 日本成熟视频免费视频 | 欧美第一区 | 中文字幕乱码亚洲无线三区 | 一扒二脱三插片在线观看 | 国产在线2021 | 香蕉久久一区二区三区啪啪 | 日韩欧美视频一区 | 西西人体做爰大胆视频韩国 | 五月婷婷综合缴猜 | 日本午夜大片免费观看视频 | 欧美一区二区三区不卡 | 在线视频这里只有精品 | 99久久精品无码一区二区毛片 | 插插综合网 | 好久被狂躁A片视频无码免费视频 | 亚洲AV久久久久久久无码 | 中文字幕在线天堂 | 日本mm | 最美情侣中文第4季 | 99久热这里精品免费 | a网站在线观看免费网站 | 五月天婷婷在线视频国产在线 | 久久久无码人妻精品无码 | 亚洲se吧| 日本韩国台湾香港三级 | 香蕉视频久久 | 国产成人在线播放 | 在线观看导航 | 国产精品国产三级国产专 | 黄色的网站在线观看 | 欧美日韩一区二区三区韩大 | 无码人妻丰满熟妇奶水区码 | 邪恶肉肉全彩色无遮盖教师 | 久久精品国产福利国产秒 | 国产一区二区无码蜜芽精品 | 亚洲AV福利天堂一区二区三 | h片在线观看视频 | 在线观看免费av网站 | 男人都懂www深夜免费网站 | 张暖雅17张大尺度照 | 国产精品亚洲精品久久精品 | 亚洲 激情 小说 另类 欧美 | 国产aav| 成人无码免费A片免费看软件 | chinese国产videos国语 | 秋霞网一区二区 | 欧美精品网址 | 动漫美女脱小内内露尿口 | 少妇性荡欲午夜性开放视频剧场 | 巨大黑人极品videos中国 | 少妇和黑人老外做爰 | 久久综合偷拍无码 | 我的公把我弄高潮了视频 | 久久国产精品免费 | 欧美在线三级艳情网站 | 国产人成精品香港三级在 | 艳妇臀荡乳欲伦交换H在线观看 | 无码潮喷A片无码高潮小说 无码成A毛片免费 | 免费观看又色又爽又黄的软件 | 91香蕉视频免费 | 真人性做爰A片免费 | 亚洲AV优女天堂波多野结衣 | 日本高清在线视频无码 | 夜鲁鲁鲁夜夜综合视频欧美 | 日b在线观看 | 中文字幕永久在线 | 亚洲精品入口一区二区乱麻豆精品 | 天堂网2017| 2020色愉拍亚洲偷自拍 | 亚洲午夜精品A片久久不卡蜜桃 | 久久精品国产亚洲AV影院 | 国产麻豆亚洲精品一区二区 | 么么哒电影大全免费观看 | 午夜网站在线观看免费网址免费 | 青草视频网站 | 日本中文字幕永久在线 | www成人免费观看网站 | 国产亚洲AV综合一区二区A片 | 日本精品久久久久久久 | 日韩亚洲欧美在线 | 欧美日韩精品一区二区在线线 | 国偷自产AV一区二区三区蜜臀 | 最近最新中文字幕免费大全 | 欧美日韩精品一区二区三区视频在线 | 欧美二区三区 | 91丝袜在线播放 | 美女脱精光让男人桶下面免费 | 天天做天天爱天天爽综合网 | 久久天天躁狠狠躁夜夜avapp | 大陆一级毛片 | 乌龙院在线观看免费观看完整版 | 色婷婷久久啪啪一区二区 | 日本xxxxx视频免费看 | 娇妻在舞厅被别人进入 | 午夜精品久久久久久久 | 亚洲大码熟女在线 | 囯产精品一品二区三区 | 精品国产乱码久久久久久免费 | 耽美肉文 高h | 人人干人人看 | 欧美va天堂在线电影 | 午夜看片免费 | 九九热热九九 | 97一本大道波多野吉衣 | 色综合视频 | 成人a毛片高清视频 | 双乳被幺公嗦到爽死小L | 精品久久久久久免费影院 | 亚洲第九十九页 | 东京热主页 | 婷婷五月久久丁香国产综合 | 日本A级A做爰片免费观看 | 亚州笫一色惰网站 | 精品人妻无码一区二区三区牛牛 | 国产亚洲欧美精品永久不卡 | 亚洲午夜久久久精品影院视色 | 狠狠色丁香久久婷婷综合图片 | 日韩内射美女片在线观看网站 | 蜜桃视频一区二区 | 久久国产免费观看精品 | 欧美成人在线网站 | 丁香色综合| 再深点舒服灬太大了添A片 在办公室里揉护士的胸 | 日本免费久久久久久久网站 | 性v天堂| 欧美free嫩交hd | 大陆老熟女嗷嗷叫AV在线 | 欧美色久| 波多野结衣在线免费视频 | 亚洲国色天香卡2卡3卡4 | 亚洲ci网 | 国产一区二区三区四区精华 | 国产精品色情国产电影 | 内射女校花一区二区三区 | 高清不卡毛片 | 欧美巨乳亚洲第一社区 | 天天日影院| 亚洲成人一区二区 | 中国一级全黄的免费观看 | 成都影院手机在线观看 | 波多野结衣久久高清免费 | 久久国产精品99久久久久久牛牛 | 国色一卡2卡3卡4卡在线新区 | 日韩三级影片 | 影音先锋AV成人资源站在线播放 | 性一交一乱一乱A片AP88 | 天天操天天爱天天干 | 国语自产拍在线观看偷拍 | 99热视| 麻豆传媒在线完整视频免费 | a级片播放| 在线观看日韩一区 | 老太奶性BBWBBW在线观看 | 岳的大白屁股光溜溜 | 国产乱码免费卡1卡二卡3卡四卡 | 日本三级网站 | 国产AA久久大片日本无码 | 欧美日韩免费在线观看 | 特色毛片 | www.黄色在线观看 | 日本黄页88网成品网站 | 欧美精品hdvideosex4k | 野花社区WWW三 | 在线观看视频免费精品视频 | 亚洲三级黄色片 | 久久精品国产清自在天天线 | 60歳の熟女セックス | 古装一级无遮当一级毛片 | 免费网站高清在线观看视频 | 亚洲小说欧美另类激情 | 一本大道熟女人妻中文字幕在线 | 老司机福利在线视频 | 最近中文字幕高清中文字幕1 | 亚洲午夜在线视频 | 成人高清 | 中字幕视频在线永久在线 | 李梦大尺度照被曝光 | 熟女丰满老熟女熟妇 | 一个人在线观看的免费视频www | 日本成人不卡 | 男女裸交无遮挡啪啪激情试看 | 亚洲a视频在线 | 老师好大乳好紧好深动态图 | 涩涩爱涩涩片影院 | 成人网站色情WWW免费 | 欧美人与动牲交免费看 | 男女啪啪永久免费观看网站 | 性欧美人 | 另类国产ts人妖系列 | 中文字幕永久在线视频 | 国产一级一级一级成人毛片 | 三级韩国日本三级在线 | 亚洲精品蜜桃久久久久久 | chinese熟女熟妇m1f | 亚洲日本高清 | 日韩爽爽爽视频免费播放 | 亚洲一级特黄特黄的大片 | 高辣H文黄暴糙汉文H文 | 99精品国产综合久久久久 | 伊人情人网 综合 | 亚洲欧美久久久久久久久久爽 | 色视频网站在线观看 | 亚洲 欧美 视频 手机在线 | 中年国产丰满熟女乱子正在播放 | 免费一级a毛片在线播放 | 午夜三级在线 | 日韩高清一区二区 | 美日韩在线观看 |