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

entretenimento

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

ypt

10 Oct 2025(atualizado 10/10/2025 às 00h16)

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

Temas

Compartilhe

Kremlin diz que san??es nunca for?ar?o Rússia a mudar de rumo.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 do concurso 4325 da quinaits 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_photos_Blood_Moon_captivates_photographers.txt

Latin America Latest News & Updates BBC News.txt conhecimento e os ponto quente conhecimento.

GRáFICOS

nos eixos

Ynys_Enlli_Dyddiadur_diwedd_yr_haf_-_BBC_Cymru_Fyw.txt

Kenya starvation cult Mother awaits DNA results on unearthed remains.txt enciclopédia e os explorar lazer.

Navegue por temas

Koala chlamydia Australia approves vaccine to curb killer epidemic.txt Le?o XIV volta a Castel Gandolfo para descanso semanal.txt Labour_might_be_down_but_its_not_necessarily_out_-_voters_reflect_on_a_year_in_power.txt Lucro da PetroReconcavo sobe 5% no 2o trimestre Empresas Valor Econ?mico.txt Le?o XIV volta a Castel Gandolfo para descanso semanal.txt Lactalis vai investir R$ 400 milh?es no Rio Grande do Sul.txt Lobby do petróleo emperra o avan?o da transi??o energética COP29 Valor Econ?mico.txt Leil?o do Detran-SP tem Mercedes Benz a R$ 20 mil; veja outras op??es.txt Killer Inn terá segundo beta fechado em outubro no Steam.txt Livro reúne líderes de ciberseguran?a e prote??o de dados Dino Valor Econ?mico.txt
日本一区二区三区免费视频 | 久久久久久国产视频 | 波多野结衣精品一区二区三区 | 国产精品手机在线观看 | 国产人妖在线视频 | 亚洲一区精品中文字幕 | 最新免费观看的电影 | 九九免费精品视频 | 国产伦精品一区二区三区在线观看 | 久久综合九色综合国产 | 九一制片厂果冻传媒 | 99精品在线视频观看 | 日韩伦理 | 性一交一乱一伧 | 国产亚洲精品久久久久的角色 | 亚洲爽爽爽爽爽A片黄漫画 亚洲天天干 | 亚洲国产成人综合精品 | 亚洲 日韩 中文字幕区 | 一区二区国产在线播放 | 国产精品野外AV久久久 | 免费视频国产在线观看 | 午夜亚洲 | 国产亚洲精品久久孕妇呦呦你懂 | 2024一本久道久久综合狂躁 | 第一成人影院 | 在线看va | 日韩精品免费在线观看 | 国产日韩久久 | 蜜桃视频m3u8在线观看 | 欧美FREE性黑寡妇 | 欧洲三级视频 | 国色天香果冻传媒国卡1区 国色天香精品卡一卡二卡三二百 | 日韩二三区| 免费又粗又硬进去好爽A片视频 | 欧美又大又色又爽AAAA片 | 黑人XOXO性欧美片 | 欧美激情视频二区 | 久草热视频在线 | 青青草大香焦在线综合视频 | 苍井空免费线在线观看无需下载 | 亚洲第一夜 | 亚洲天码中字 | 在线观看免费a∨网站 | 无码欧美毛片一区二区三在线视频 | 亚洲精品无AMM毛片 亚洲精品无码成人A片在线古代 | 成人网站色情WWW在线 | 欧美乱妇乱码大黄AA片 | 精品无码国产AV一区二区三区 | 亚洲一区二区色情苍井空 | 欧美又粗又嫩又黄A片成人 欧美躁天天躁无码中文字 欧美真人性做爰一二区欧美影院 | 最新国产三级 | 永久品色堂 | 最爽乱小说录目伦小说 | 亚洲色欲色欲在线大片 | 欧美1卡一卡二卡三新区 | 国产成人mv 在线播放 | 成人黄色毛片 | 爱草网 | 性一交一乱一交A片久久 | 亚洲国产女人aaa毛片在线 | 精品日产1区2卡三卡麻豆 | 自拍中文字幕 | 亚洲欧美日韩另类精品一区二区三区 | 黄色在线播放网址 | 国产传媒在线观看视频免费观看 | 最新在线中文字幕 | 久cao在线香蕉69影院 | 另类视频综合 | 天天干一干 | 99精品与95优品| 在线观看中文字幕国产 | 视频黄页在线观看 | 黄色在线免费播放 | 久久久久久久国产精品 | 中文字幕高清在线中文字幕 | 狠狠色噜噜狠狠狠狠91 | 亚洲国产网站 | 国产精品亚洲精品久久国语 | 99好久被狂躁A片视频无码 | 成品人和精品人的在线观看 | 久草在线在线精品观看 | 午夜伦理:伦理片 | 国产jizzjizz视频免费看 | 少妇被多人C夜夜爽爽 | 中文字幕完整高清版 | 乱肉合集乱500篇小说书架下载TXT | 亚洲午夜未满十八勿入 | 日韩18视频在线观看 | 乱师生肉合集乱500篇小说 | 91精品福利久久久 | 九九热视频免费观看 | 色网在线免费观看 | 日韩久久一区二区三区 | 色偷偷WWW.8888在线观看 | 久久九九色 | 2024四虎www网址2| 人色网 | 午夜福利18禁视频 | 日韩一区精品视频一区二区 | 在线网站:yw193.com | 中文字幕在线日韩 | 欧美激情综合色综合啪啪五月 | 高黄H文各种姿势PLAY道具1V1 | 四房播播qvod | 中文字幕卡二和卡三的视频 | 99国产午夜精品一区二区 | 欠cao的sao货撅屁股双性 | 色欲AV久久一区二区 | 久久综合色一综合色88中文 | 国产高清免费视频免费观看 | 97资源共享在线视频 | xxx日本在线 | 内射人妻无码色AB麻豆 | 波多野结家庭教师 | 特级毛片aaaa免费观看 | 国产麻豆放荡AV剧情演绎 | 草色噜噜噜AV在线观看香蕉 | 偷看农村女人做爰毛片色 | 波多野结衣亚洲一区二区三区 | 色多多深夜福利免费观看 | 91中文字幕在线 | 种地吧2在线观看 | 中文在线最新版天堂 | 四虎最新网站 | 成年片色情大免费网站 | 国产亚洲精品精品精品 | 日本毛片爽看免费视频 | 九九九视频 | 国产麻豆精品一区 | 男女爽爽午夜18污污影院 | 国产精品高潮呻吟AV久久 | 国产精品JIZZ在线观看A片 | 国产福利91精品一区二区三区 | 无码欧美喷潮福利XXXX | www..com黄| 久久综合老色鬼网站 | 国产亚洲精品精品精品 | 熟女人妻水多爽中文字幕 | 日本无码免费一区二区不卡的视频 | 激情六月综合 | 欧美精品成人久久网站 | 深夜偷偷看视频在线观看 | 久久综合视频网 | 亚洲图片你懂得 | 国产精品久久久精品视频 | 色婷婷五月色综合小说 | 99看视频 | 久久综合干 | 韩国三级日本三级 | 欧美人妇无码精品久久 | 三级国产短视频在线观看 | 在线观看黄色毛片 | 91av在线免费观看 | 野花社区WWW中文高清版 | 国产无遮挡又黄又大又爽在线观看 | 最新国产三级久久 | 2021久久伊人精品中文字幕有 | 国产精品久久久久久小说 | 天天操天天弄 | 国产又爽又猛又粗的视频A片 | 97久久超碰中文字幕 | 天堂网www在线资源中文 | 久久精品无遮挡一级毛片 | 91精品国产高清91久久久久久 | 波多野结衣在线观看一区 | 国产精品久久福利新婚之夜 | 伊人无码高清 | 国产A级毛片色咪味 | 国产色精品久久人妻无码看 | 国产精品99久久免费观看 | 四虎国产成人免费观看 | 日韩VS欧美VS亚洲VS无码 | 天天澡天天干 | 国产精品久久久久久久上海公司 | 纯肉高H啪短文合集 | 日本猛少妇色XXXXX猛叫 | AV亚洲产国偷V产偷V自拍AV | 日本无码成人片在线观看波多 | 国产婷婷色一区二区三区在线 | 通房公子 | 色色男_免费 | A片好大好紧好爽视频 | 亚洲三级黄色 | 成人做爰视频WWW网站 | 国产午夜亚洲精品国产 | 色秀视频免费网站在线观看 | 久久国产一片免费观看 | 久久综合亚洲色综合 | 18以下勿进色禁网站永久视频 | 日本精品中文字幕在线不卡 | 婷婷四月开心色房播播 | 91中文字幕在线 | 国产ts在线视频 | 欧美精品亚洲精品 | A片A三女人久久7777 | 99re 久久这里只有精品6 | 色网免费 | 最新国产中文字幕 | 一百款流氓软件免费下载安装 | 激情黄网 | 四虎影视精品 | 日本三级很黄试看120秒 | 成人免费观看在线视频 | 天堂va | 国产精品久久久无码A片小说 | 亚洲欧洲日本天天堂在线观看 | 无人区乱码区1卡2卡三卡在线 | 少妇人妻邻居做爰无码 | 国色天香日本免费观看 | 久久乐国产综合亚洲精品 | 天天躁了天天躁了天天躁 | 巨肉超污巨黄H文小短文 | 国产在线精品二区李沁 | 久久久久久久久亚洲 | 国产精品AV一区二区三区不卡蜜 | 精品无人区麻豆乱码1区2区新区 | 毛片中文字幕 | 香蕉成人伊视频在线观看 | 亚洲AV无码一区二区色情蜜芽 | 国产成人久久久精品毛片 | 色综合天天综合网站中国 | 日本阿v视频高清在线 | 欧美剧场 | 伊人网站 | 午夜精品一区二区三区免费视频 | 久久草这在线观看免费 | 亚洲国产AV一区二区三区四区 | 黄色插插插 | 玖玖国产精品视频 | 国产精品亚洲视频在线观看 | 亚洲精品AAA揭晓 | 草草CCY丫C0影院 | 又爽又色又舒服A片免费 | 亚洲精品久久无码午夜一区二区 | 2022国产成人综合精品 | 强壮公次次弄得我好爽A片 强壮公弄得我次次A片 | 蝌蚪窝99视频 | 精品精品国产自在久久高清 | 在线91色 | 丁香婷婷久久大综合 | 日本aⅴ日本高清视频影片www | 男人桶爽女人30分钟软件免费 | 欧美产品与亚洲日韩视频 | 免费黄毛片| 在线观看黄日本高清视频 | 欧美韩国日本一区 | 最近免费中文字幕大全高清10 | 国产在线2021 | 中文字幕国产 | 精品自拍一区 | 国产午夜影视大全免费观看 | 欧美一区二区三区激情视频 | 全肉高黄高h的小说推荐 | 欧美一级美片在线观看免费 | 人妻丰满熟妇V无码区A片免费看 | 亚洲欧美v国产一区二区 | 欧美videos巨大hd | 久久精品国产亚洲精品 | 日本一本二本三区无码 | 欧美特黄一级高清免费的香蕉 | 亚洲 欧美 小说 图片 视频 | 帝王被大臣们调教高肉 | 涩涩涩涩爱网站 | 抱着娇妻让朋友一起弄 | 午夜视频a| 亚洲国产成人精品动漫 | 校花被房东C得合不拢腿H男男 | 亚洲中文字幕日本在线观看 | 精品亚洲卡一卡2卡三卡乱码 | 欧美无人区码卡二卡3卡4免费 | 韩日在线| 丁香花视频资源在线观看 | 日韩乱轮 | 在线欧美日韩精品一区二区 | 国产成人综合久久精品下载 | 国产精品一区二区资源 | 免费的三级毛片 | 国产精品久久久久久一级毛片 | 中文字幕在线最新在线不卡 | 永久免费的网站观看 | 波多野结衣视频一区二区 | 久久人妻国产精品31 | 欧美xxxx做受欧美88bbw | 曰韩少妇内射免费播放 | 忘忧草在线影院WWW日本社区 | 日本老妇和子乱视频 | 欧美一区二区三区播放 | 在线观看免费国产成人软件 | 日韩精品亚洲专区在线影院 | 中国黄色一级毛片 | 久久综合色悠悠 | 欧美激情视频一区二区三区 | 天天射日日 | WW.国产人妻人伦精品 | 忘忧草影院在线www韩国日本 | 久久精品国产亚洲麻豆小说 | 天天在线干 | 激烈啪啪啪动态图 | 欧美一级二级三级 | 公交车艳妇系列1一40 | 欧美特级午夜一区二区三区 | 手机在线看黄色 | www.youjizz.com视频 | 亚洲va久久久噜噜噜久久天堂 | 日本a级精品一区二区三区 日本a级黄 | 性奴抽插乳中出精没射视频搜索 | 曰本人做爰又黄又粗视频 | a级片在线观看 | 亚洲性无码A片在线观看尖叫 | 亚洲色无码A片一区二区麻豆 | 色一伦一情一区二区三区 | 亚洲精品无码成人A片在线虐C | 欧美XXXXXXX乱XXX另 | 四虎免费在线视频 | 天天做天天射 | 日本最新免费网站 | BT天堂网WWW资源 | 亚洲最大在线视频 | 精品国产中文字幕 | 蝌蚪视频窝在线播放 | 久久精品国产亚洲AV麻豆 | a级毛片免费 | 亚洲人成网站999久久久综合 | 99精品久久精品一区二区 | 亚洲国产天堂在线观看 | 欧美熟妇无码XXXXXX | 美女爽到嗷嗷嗷叫 | 中文字幕资源网 | 久久a在线视频观看 | 含紧一点H边做边走动免费视频 | 亚洲福利影视 | 秋霞最新高清无码鲁丝片 | 国产精品A久久20242024 | 一二三四中文字幕 | 欧美乱大交xxxxx在线观看 | 99国产在线观看 | 天天干在线免费视频 | freesexvideo性2| 视频一区在线免费观看 | 久久精品爱国产免费久久 | 男女做爰猛烈啪啪吃奶真人免费 | 91avcom| 中文字幕亚洲一区 | 日韩在线视频www色 日韩在线免费观看视频 | 国产高清在线露脸一区 | 欧美裸色美妆大全 | 日本一区二区三区在线看 | 国产剧情福利AV一区二区 | 四虎无码永久在线影库网址一个人 | G0GO人体大尺香蕉 | 国产精品视频99 | 亚洲人精品亚洲人成在线 | 色一伦一情一区二区三区 | 成人18网站 | 日韩网站在线观看 | 免费看真人a一级毛片 | 久久免费高清视频 | 成年在线观看网站免费 | 99久久精品国产一区二区 | 永久免费观看美女视频 | 国偷盗摄自产福利一区在线 | 黑巨茎大战美女在线播放 | 97在线观看视频 | 免费在线看污网站 | 98色精品视频在线 | 色情A片做爰片 | 欧美色色 | 成年女人免费视频 | 青草视频在线观看免费视频 | 勿言推理日剧在线观看 | 亚洲色无码A片一区二区情欲 | 免费网站在线观看人数在哪里看的 | 精品国产午夜肉伦伦影院 | 国产玩弄放荡人妇系列 | 久在线观看福利视频 | 亚洲欧美日韩国产专区一区 | 蜜臀国产一区二区三区无码A片 | 91啊啊啊 | 曰本xxⅹ孕妇性xxx | 午夜快车神马影视 | 五月丁香 | 成品人和精品人的在线观看 | 99久久无码一区人妻A片竹菊 | 国产精品一区二区在线播放 | 久久久国产精品免费A片分环卫 | 激情五月色综合国产精品 | 青草免费观看 | 五月天丁香激情 | 免费无码一区二区三区A片下载 | 日本aⅴ永久免费网站www | 欧美午夜福利1000集2019年 | 黄频网 | 把手戳进美女尿口里动态图 | 欧美国产在线一区 | 乱码欧美一卡2卡3卡4 | 天天操夜夜添 | 小荡货好紧好爽奶头好大视频网站 | 按摩高潮A片一区二区三区 澳门永久av免费网站 | 无码一区二区三区亚洲人妻 | 日韩娇小性hd | 日本A级作爱片金瓶双艳 | 在线观看国产亚洲视频免费 | 免费精品精品国产欧美在线 | 玩高中女同桌肉色短丝袜脚文 | 小SB几天没做SAO死了H | MAC水蜜桃色314麻豆 | 久久经典免费视频 | 色撸撸 | 免费女性裸身照无遮挡网站 | 最新国产在线熟女视频 | 欧美日韩看看2015永久免费 | 在线成人国产 | 无限观看社区在线观看免费 | 黑人巨茎大战欧美白妇免费 | 综合色就爱涩涩涩综合婷婷 | 亚洲一级毛片免费看 | 全黄H全肉禁乱公 | 欧美中文字幕视频 | 在线精品视频免费观看 | 日本一本无码中文字幕 | 天天操狠狠干 | 免费永久在线观看黄网站 | 99爱视频免费高清在线观看 | 99热免费精品 | 色网在线 | 少妇人妻真实偷人精品视频 | 波多野结衣资源在线 | 麻豆TV入口在线看 | 亚洲第9页 | 高清一区二区不卡视频 | 四虎最新链接2024 | 欧美人与动牲交免费观看视频 | 久久婷婷无码欧美日韩 | 无套内谢少妇毛片A片软件 无套内谢少妇毛片A片小说色噜噜 | 国产又色又爽又黄又刺激18 | 亚洲欧美日韩精品久久亚洲区 | 99精品噜噜噜成人AV | 国内精品视频在线播放一区 | 我国产码在线观看AV哈哈哈网站 | 国产精品户露AV在线户外直播 | 色视频下载 | 97天天干| 日本老熟五十路息孑安野由美 | 最新黄色地址 | 国产精品福利片 | 美女诱惑性感揉胸 | 中文字幕韩国三级少妇在线光看 | 五月天天爱 | 国产做国产爱免费视频 | 真实乱L仑口述全过程 | 中文在线免费不卡视频 | 亚洲 第一区 欧美 日韩 | 黃片小视频免费 | 国产在线欧美日韩一区二区 | 99r8这是只有精品视频9 | 国产免费观看a大片的网站 国产免费福利网站 | 久久99精品视免费看 | 欧美又粗又大AAA片 欧美又粗又大XXXX无码 | 中文字幕色在线 | 亚洲三级在线观看 | 亚洲AV久久无码精品蜜桃 | 美女内射视频WWW网站午夜 | 小SB几天没做SAO死了H | 亚洲精品色播一区二区 | 免费大片在线观看视频网站 | 久久精品国产无限资源 | 亚洲 欧美精品 | 久草中文视频 | 欧美日韩国产一区三区 | 大胆毛茸茸的湿户 | 奇米影视四色影音先锋 | 国色天香精品卡一卡二卡三二百 | 亚洲精品国产国语 | 日本成熟少妇高潮A片 | 97精品视频在线观看 | 综合干狼人综合首页 | 在线精品亚洲观看不卡欧 | 亚洲国产品综合人成综合网站 | 五月情视频在线观看 | 欧美国产激情二区三区-免费A片 | 人人在线观看 | 一道本av免费不卡播放 | 波多野结衣在线观看一区 | 欲香欲色天天综合和网 | 免费成人在线电影 | 久久久网站亚洲第一 | 综合色天天 | 一体一道久久88色合综合网 | 日本免费在线视频 | 国产又爽又大又黄A片 | 成人乱码一区二区三区AV0 | 亚洲精品久久午夜无码一区二区 | 国产精品日本无码久久一 | 三八色 | 天天狠狠干 | 欧美成人精品第一区 | 大陆一级黄色片 | 亚洲三级久久 | 欧美孕妇xxxxhd高清 | 先锋影音男人av资源 | 性欧美高清精品video | 拍拍拍无档又黄又爽视频 | 在线视频 日本 | 小黄文纯肉污到你湿 | 色婷婷中文字幕在线一区天堂 | 好紧好湿太硬了我太爽了文字 | 亚洲AV国产AV综合AV卡 | 亚洲成熟女人毛毛耸耸多 | 精品一区二区三区在线成人 | 中文字幕日本六区小电影 | 国产精品丰满人妻AV麻豆 | 日韩欧美一区二区三区在线视频 | 91视频网址 | 国产一卡2卡3卡4卡公司 | 欧美色交| 国产精品久久久久久爽爽爽床戏 | 中文字幕 日本 | av岛国小电影在线观看 | 日日碰狠狠躁久久躁96AVV | 日本三级韩国三级三级a级按摩 | 宝贝吃吃它就像吸棒棒糖 | 少妇特黄A片一区二区三区小说 | 黄色毛片视频校园交易 | 国产在线观看91精品2021 | 2024精品国色卡一卡二 | 天堂8资源8在线 | 日日碰狠狠躁久久躁77777 | 欧美亚洲高清国产 | 国产91精品高清一区二区三区 | 最近更新中文字幕版 | 欧美AAAA级A片又粗又硬 | 久久影院国产 | 亚洲欧美日韩中文加勒比 | 日韩精品永久免费播放平台 | 中国亚洲女人69内射少妇 | 亚洲人精品午夜射精日韩 | 激情内射亚洲一区二区三区 | 国产美女做爰A片免费 | 综合干狼人综合首页 | 有没有看片的免费资源 | 另类专区av无码 | 91精品全国免费观看青青 | 欧美视频在线播放bbxxx | 老外毛片 | 近親五十路六十被亲子中出 | 99精品国产免费观看视频 | 午夜婷婷一夜七次郎 | 国产a不卡片 | 亚洲婷婷六月的婷婷 | 五月婷婷丁香六月 | 久久99精品久久久久久园产越南 | 丝袜亚洲另类欧美变态 | 国内精品久久影院 | 日韩激情图片 | 国产AV亚洲AV麻豆专区 | 伦理片2488电影伦理片 | 欧美成人天天综合在线视色 | 把女人弄爽A片特黄大片在线 | 男人狂躁女人A片免费网站 男人猛躁进女人的毛片A片 | 强伦姧人妻日韩A片 | 欧美人妻无码A级视频 | 日本在线观看网站 | AV国産精品毛片一区二区网站 | av老司机色爱区综合 | 在线黄色网| 黄色一级视频网 | 韩国精品一区二区三区在线观看 | 国精产品一品二品国精在线观看 | 日韩一卡2卡3卡4卡2021免费观看妈妈的朋友 | 欧美日韩精品一区二区三区视频在线 | 亚洲一码二码三码精华液 | aa级毛片毛片免费观看久 | 成人国产AV精品久久久久 | 黄页在线播放网址 | 另类视频色综合 | www.色播.com| 精品人妻无码一区二区三区绿 | 真人做爰视频在40分钟 | 黄页免费在线观看 | 有码一区 | 亚洲无人区在线观看AV | 国产成人青草视频 | 人人做人人爽人人爱影视 | 全球热恋迅雷 | 2022国产精品福利在线观看 | 女人毛多水多高潮A片 | 中文精品一卡2卡3卡4卡国色 | 阿娇艳Z门照片无码AV4I | 2022在线精品视频网站 | 91小视频在线 | 求个网站你懂的无毒 | 99xxoo视频在线永久免费观看 | 久久精品国产99国产 | 亚洲午夜精品 | 日本免费专区在线观看中破初 | 97视屏| 丁香五月啪激情综合 | 能在线观看的一区二区三区 | 伊人久久综合成人亚洲 | 亚洲AV综合AV一区二区综合 | 狠狠色丁香九九婷婷综合五月 | 久久天天躁狠狠躁夜夜躁 | 含着不拔出来 H 1V1 | 国产男女猛烈无遮挡A片漫画 | 久久精品国波多野结衣 | 日本大片免a费观看视频 | 97国产露脸精品国产麻豆 | 伦理电影院| 欧美高清日本三级人妇 | 日干夜操 | 国产精品免费看久久久 | 中国黄色网址大全 | 从零开始的异世界生活第一季 | 91日本在线视频 | 国产97人妻人人做人碰人人爽 | 最新国自产拍短视频 | 国产理论在线观看 | 两性午夜欧美高清做性 | 无套内射在线无码播放 | 日韩午夜欧美精品一二三四区 | WWW亚洲精品久久久 www在线小视频免费 | 国产一区二区三区在线看片 | 亚洲 校园 春色 另类 图片 | 亚洲午夜无码毛片AV久久京东热 | 亚洲小说电影偷拍在线观看 | 久久精品国产福利国产秒 | 亚洲欧美精品无码一区二在线 | bl肉文推荐失禁 | 麻豆文化传媒精品一区观看 | 免费一级淫片aaa片毛片a级 | 国产乱人偷精品人妻A片 | 国产精品伦理一区二区三区 | 亚洲精品做爰无码片麻豆 | 100国产精品人妻无码 | 国产深夜福利视频在线 | 开心婷婷色 | 妻友视频 | 天天躁日日躁 疯人影院 | 色视频网站在线观看 | 波多野结衣中文字幕在线播放 | 男女做爰猛烈啪啪吃奶真人免费 | 日韩熟女精品一区二区三区 | 大片免免费观看视频播放器在线观看 | 忘忧草在线影院日本图片 | 欧美日韩一区二区三区色综合 | 精品国产乱码久久久久久人妻 | 日产精品视频 | 国产一二三区有声小说 | 久久九九精品视频 | 性xxxx视频在线观看 | 亚洲AV久久无码精品九九小说 | 欧美日本日韩 | 亚洲第色情一区二区 | 国产美女无遮挡裸体毛片A片软件 | 特级淫片国产免费高清视频 | 天天操夜夜操美女 | 一本一道久久综合网 | 99久久精品费精品国产一区二 | 帅哥摸舔美女全身视频 | 国精产品W灬源码A片伊在线 | 成人精品AV一区二区三区网站 | 老司机午夜在线视频 | 影音先锋资源av天堂 | 日本a视频在线观看 | 欧美片第1页 综合 | 人妻夜夜爽天天爽三区麻豆AV网站 | 亚洲色图网 | 校花岔开玉腿欲液横流 | 国产不卡在线看 | 日本不卡一区二区三区 最新 | 亚洲成A人无码亚洲成WWW牛牛 | 强硬进入岳A片69色欲VA | 亚洲精品卡2卡3卡4卡乱码 | 一道本av免费不卡播放 | 草莓ap| xx顶级欧美熟妞xxhd | SM女人捆绑调教网站A片软件 | 亚洲精品久久久久久久久久久 | 天天操夜夜操美女 | 国产精品人妻无码久久久免费看 | 十九天漫画在线观看免费 | 毛片在线观看地址 | 浴室里强摁做开腿呻吟的漫画 | 四房播播婷婷基地 | 少妇性BBB搡BBB爽爽爽四川 | 成人免费又大又爽A片视频 成人女人A级毛片免费软件 | 日韩在线aⅴ免费视频 | 久久不卡免费视频 | 免费看少妇高潮A片黄 | 国产亚洲精品视频在线网 | 亚洲成综合 | 啊轻点灬大巴太粗太长视频 | 日韩精品在线视频 | 国内偷拍2019在线偷拍视频 | 野花社区wwW高清视频 | 六月丁香在线播放 | 精品免费国产一区二区三区四区五 | 欧美猛交XXX无码黑寡妇 | 亚洲欧美激情精品一区二区 | 日日麻批40分钟免费播放 | 日韩特级 | 殴美a | 黄色网址www | 4色播| 日日噜噜夜夜狠狠久久丁香婷婷 | 97任你碰任你摸任你爽 | 男男双性高H浪荡小说合集 男男体育生乱yin高H肉汁 | 年轻的朋友6 免费观看 | 曰本道人妻丰满AV久久 | 免费无码毛片一区二区A片 免费无码精品黄AV电影 | 欧美三页| 日韩h视频| 国产免费网站看v片元遮挡 国产免费区 | 九九热免费观看 | 亚洲AV国产AV一区无码小说 | 亚洲精品国偷拍自产在线观看蜜桃 | 91精品国产高清久久久久 | 国内精品久久影院 | 亚洲综合色五月久久婷婷 | 久久大蕉香蕉免费 | 狠狠躁夜夜躁人人爽A片 | 我们的生活第七季在线观看免费高清 | 亚洲精品久久久久久无码AV | 最近免费MV在线观看动漫 | 成年人网站免费看 | 无人区1在线观看 | 影帝做着做着进去了H | 亚洲在线视频自拍精品 | 亚洲国产AV一区二区三区四区 | 日本在线观看视频网站 | 黄在线免费 | 拔擦拔擦8X永久华人免费播放器 | 国产精品国产三级国产an不卡 | 国产五月色婷婷六月丁香视频 | 日本一本一道波多野结衣 | 无码精品一二三四区A片 | 国产超碰AV人人做人人爽 | xvideos永久免费入口 | 成人免费的性色视频网站 | 中文字幕在线最新在线不卡 | 免费伦费一区二区三区四区 | 免费网站色 | 性一交一乱一A片WWW | 日日鲁鲁鲁夜夜爽爽狠狠 | 国产大片资源中文字幕 | 天堂资源在线中文在线 | 97色在色在线播放 | 国产 有码 无码 电影 | 国产乱妇乱子在线播视频播放网站 | 久久亚洲精品中文字幕三区 | 狠狠色噜噜狠狠狠狠888奇米 | v欧美精品v日本精品 | 成人AV久久一区二区三区 | 当着闺蜜的面被抽插后入小说 | WWW久久只有这里有精品 | 日韩波多野结衣 | 色情无码鲁鲁A的电影 | 家庭教师波多野吉衣 | 污污的网站免费在线观看 | 男人猛躁进女人毛片A片 | 国产精品 制服中字 在线视频 | 波多野结衣一区2区3区 | 精品无码日本蜜桃麻豆 | 咪咪色影院 | 国色天香精品一卡二卡三卡四卡 | 爱草网| 欧美一卡二卡3卡4卡无卡免费 | 九九久久国产精品大片 | 亚洲视频高清不卡在线观看 | 色中色网站 | 日韩精品午夜视频一区二区三区 | 成人性视频在线三级 | 最新亚洲精品国自产在线 | 亚洲黄色免费观看 | 国产精品亚洲精品久久国语 | 中文字幕亚洲综久久2021 | 色久激情| 一卡二卡3卡4卡免费 | 欧美另类xxxxhd高清 | 亚洲va在线va天堂成人 | 成全免费高清观看在线 | 久久人视频| 狠狠色丁香婷婷综合久久片 | 国产免费又色又爽又黄的小说 | 99精品国产免费久久久久久下载 | 宅男噜噜噜66网站 | 天天干天天干 | 亚洲精品综合在线影院 | 成人A片熟女人妻久久 | 艳妇乳肉豪妇荡乳a亚洲 | 永久免费不卡在线观看黄网站 | 国产自产一c区 | 国精产品999国精产品官网 | 澳门一级毛片手机在线看 | 波多野结衣视频一区二区 | 国产精品一区成人精品 | 日本在线看 | 中国黄色一级毛片 | 九九九免费观看视频 |