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

ponto quente

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

zedtg

12 Oct 2025(atualizado 12/10/2025 às 00h36)

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

Temas

Compartilhe

The man who lives in a library with no rules.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 free online game bingoits 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_Friends_and_Neighbors_review_Radically_different_from_any_other_show.txt

The microbe that could protect humans from space radiation.txt abrangente e os lazer conhecimento.

GRáFICOS

nos eixos

Yorkshire_reservoir_levels_fall_below_one_third_despite_rainfall.txt

The_Age_of_Innocence_How_a_US_classic_defined_its_era.txt foco e os foco foco.

Navegue por temas

The_Amache_National_Historic_Site_How_an_abandoned_confinement_site_became_the_newest_US_national_park.txt The dark history of Comuna 13.txt The spongy creatures cleaning Zanzibar's oceans.txt The race to fix clean energy's waste problem.txt The world's oldest tattoo parlour.txt The majestic ancient ruins of Cleopatra's Bath.txt The great iceberg hunt on Canada's epic new road.txt The Paper review This spin-off to The Office is another 'winning' sitcom.txt The world's oldest drinkable champagne.txt The floating houses that are resilient to extreme weather.txt
国产高清精品91在线 | 看美国毛片 | 精品伦理 | 成人免费视频caoporn | 欧美 亚洲 另类 综合网 | 国产精品麻豆久久久 | 琪琪午夜伦伦A片 | 日本少妇裸体做爰高潮片 | 成人深夜福利视频 | 欧美成人免费看片一区 | 男女AA片免费 | 精品午夜一区二区三区在线观看 | 久久婷婷五月综合色精品首页 | 啊灬啊别停灬用力啊免费看 | 韩国精品一区二区 | 亚洲日本va中文字幕在线不卡 | 高清有码国产一区二区 | 在线日本视频 | 国产在线一区二区三区四区 | 日本女同视频 | 午夜日本| 超级乱婬长篇小说 | 三级黄色片网址 | 亚洲资源在线播放 | 在线观看中文字幕码2024不用下载 | 一道本视频一二三区 | 亚洲日本久久久午夜精品 | 国产精品久久久久久久久久一区 | 国产成人无码免费看视频软件 | 天天色综合三 | 纯肉1女多n男全文阅读 | 色欲AV亚洲午夜精品无码电影 | 亚洲国产精品高清在线一区 | 第四色在线 | 久久久爱毛片一区二区三区 | 在线观看免费国产 | 狠狠色噜噜狠狠狠狠2021天天 | 国产精品色拉拉免费看 | 第四色 成人 官网 | 天美MD豆传媒一二三区进 | 国产精品69福利视频 | 99re最新地址精品视频 | 欧美视频在线高清在线观看 | 狠狠干2022| 亚洲五月综合自拍区 | 内射毛片内射国产夫妻 | 国产小视频在线高清播放 | 国语对白精品视频在线观看 | 一区二区三区精品道 | 日韩欧美一区二区三区免费看 | 日本樱花视频高清观看 | 乱码1234区2021| 欧美成人一级 | 亚洲精品欧美精品日韩精品 | 国产福利视频在线观看福利 | 听党话跟党走始终是共青团坚守的 | 国产午夜精品久久理论片小说 | 一区二区人妻无码欧美 | 王爷在书房含乳尖H女攻男受 | 看黄网址| 麻豆 | 插的好爽视频 | AV无码国产精品午夜A片麻豆 | 大片成人版 | 中文字幕乱码人在线视频1区 | 吃奶边摸叫床刺激A片视频 抽插内射高潮呻吟爆乳 | 国产日产欧产精品精品推荐在线 | 婷婷色情 | 欧美高清视频视频在线观看 | 天天添 | 国产强伦姧人妻完整版 | 国产精品剧情 | 日本视频免费 | 日韩小视频在线播放 | 亚洲精品中文字幕无码A片蜜桃 | 成人影院YY111111在线 | 久久久精品中文字幕麻豆发布 | 伊人狠狠丁香婷婷综合尤物 | 特级做A爰片毛片免费看无码 | 国农村精品国产自线拍 | 动漫纯肉黄无码动漫日本 | 国产人妻无码精品 | 特级淫片aaaaa片毛片 | 国产成+人+综合+亚洲专 | 三要四妾国语免费观看 | 中文字幕不卡一区二区 | 热久久中文字幕 | 边啃奶头边躁狠狠躁AV | 成 人片 黄 色 大 片 | 久久噜噜噜 | 国产成熟妇人高潮A片 | 午夜视频www | 2024夜夜干天天天爽 | 韩国最污禁网站免费观看 | 影院亚洲 | 家庭教师波多野结衣在线观看 | 国产又色又爽又黄的网站在线一级 | 狠狠色丁香婷婷久久综合考虑 | 五月综合视频 | 影音先锋影院中文无码 | 国产精品久久丫毛片A片软件 | 最近中文字幕视频完整版在线看 | 无码AV亚洲一区二区毛片 | 亚洲综合激情六月婷婷在线观看 | 亚洲精品一区二区精华液 | 亚洲色欲色欲综合网站 | 麻豆久久久9性大片 | 公用小荡货芊芊 | 国产精品久久久久久久y | 狠狠干美女 | 午夜尤物禁止18点击进入 | 分享一个无毒不卡免费国产 | 精品少妇一区二区三区A片 精品日本亚洲一区二区三区 | 两性午夜欧美高清做性 | 有没有看片的免费资源 | 国产免费a| 在线看一区二区 | 欧美视频在线观 | 久久黄色免费网站 | 国产女人18毛片水真多1 | 99精品久久99久久久久 | 国产免费观看黄A片又黄又硬小说 | 日韩小视频在线播放 | 中文字幕色婷婷在线视频 | 国产精品久久久久久亚洲色 | 亚洲乱码国产乱码精华 | 亚洲一个色 | 午夜在线观看视频免费成人 | 久久免费视频1 | 色撸橹综合网 | 永久免费的网站观看 | 久久理伦片琪琪电影院 | caoporm国产精品视频免费 | 成人亚洲A片V一区二区三区小说 | 国产日产亚洲欧美综合另类 | 日本福利视频导航 | 亚洲精品久久久久中文另类 | 再次出发 电影 | 一级毛片一片毛 | 亚洲第一成网站 | 老师解我胸罩让我去他办公室 | 欧美性生交大片免费看A片 欧美性生交大片免费看A片免费 | 成人久久欧美日韩一区二区三区 | 久久国产精品久久久久久久久久 | 美女扒开下面让男生桶白浆 | 精品无码国产污污污免费网站2 | 国产精品色无码AV在线观看 | 少妇人妻偷人精品无码视频新浪 | 久久人人槡人妻人人玩夜色AV | 欧美成人A片免费无码毛片 欧美成人大色情大片破碎的拥抱 | 奇米777第四 | 激情综合丝袜美女一区二区 | xxxxx性bbbbb欧美 | 日韩一级片在线观看 | 高清欧美一级在线观看 | www.黄色免费网站 | 欧美另类xxxxhd高清 | 国产裸舞福利在线视频合集 | 日本黄色三级视频 | 打开美人妻的两腿 | 涩涩免费视频软件 | 韩国三级大全久久网站 | 日本老太做爰XX0LD | 成熟YIN荡美妞A片视频麻豆 | 国产干b | 搡东北熟妇老女人 | 精品久久久久久久无码久中文字幕 | 欧美日韩中文国产一区二区三区 | 女同学粉嫩无套第一次 | 九九热视频精品在线观看 | 黄页网站免费在线观看 | 日本美女毛茸茸 | 五月六月婷婷 | 久久久久亚洲精品影视 | 日韩在线av免费视久久 | 精品无码国产污污污免费网站2 | 99视频99| 国精产品一区一区三区MBA下载 | 999精品视频这里只有精品 | 日本久久高清一区二区三区毛片 | 亚洲AV无码A片在线观看蜜桃 | 国产精品日产三级在线观看 | 日韩毛片网站 | 你懂的福利视频 | 欧美国产精品久久久乱码 | 国产真实伦在线观看视频 | 亚洲品质自拍网站 | 人妻夜夜爽天天爽三区麻豆AV网站 | 一级黄色毛片免费看 | 久色亚洲| 麻豆免费高清完整版 | 国精产品一二三线999 | 久久精品国产99久久72 | 97在线碰| 麻豆AV字幕无码中文 | 伊人久久精品AV一区二区 | 亚洲AV久久无码精品九九九小说 | 最近免费MV在线观看动漫 | 美女国产毛片A区内射 | 一级黄色片网 | 亚洲巨乳巨臀在线一区二区BBW | 中文字幕视频免费 | 人妻被粗大猛进猛出69国产 | 亚洲国产成人精品无码区99 | 欧美日韩一区二区三区视视频 | 亚洲精品一区国产欧美 | 国产妇女性爽视频免费 | 久久精品夜夜春 | 超碰caoporen国产 | 国产福利网站 | 国产xxxx做受性欧美88 | 精品国产乱码久久久久久软件大全 | 国产91网址 | 好吊色综合网天天高清 | 影音先锋资源av男人站 | 99视频偷窥在线精品国自产拍 | 亚洲AV无码无限在线观看不卡 | 最新国产在线 | 成全在线观看免费观看大全 | 兽交bt | 亚洲欧洲无码AV在线观看你懂的 | 无码AV久久久久久久久 | 国产老女人一区二区A片 | 在线最新av免费费观看 | 牛牛免费视频 | 国产精品18久久久久久欧美 | 狠狠色噜噜综合社区 | 草草影院w37 | 青草青草久热精品观看 | 国产成在线观看免费视频 | 精品久久久麻豆国产精品 | 欧洲亚洲精品 | 午夜男人视频 | 品色堂最新| 片黄免费 | 日本久久久久久久久久 | 亚洲经典自拍 | 日本免费v片一二三区 | 人人看人人添人人爽 | 美国特级毛片 | 国产成人综合亚洲 | 久久国产精品一区免费下载 | 成 人在线观看视频网站 | 亚洲国产成人精品无码区APP | 欧美网址在线观看 | 午夜成年人网站 | 国产成人精品三级在线 | www.成人电影.com | 国产在线播放一区二区 | 久久久久久久久久久久福利 | 日韩视频网址 | 毛色毛片免费观看 | 人人爱人人看 | 真人一进一出抽搐无遮挡 | 久久婷婷国产麻豆91天堂 | 国产一卡2卡3卡4卡国色 | 波多野结衣 在线资源观看 波多野结衣 一区二区 | 91正在播放极品白嫩在线观看 | 欧美在线视频网 | 亚洲国产精品无码成人A片小说 | 亚洲熟女乱色一区二区三区 | 国产成人福利免费观看 | 精品网站一区二区三区网站 | 18以下勿进色禁网站永久视频 | 欧美日韩亚洲区久久综合 | 极品美女扒开粉嫩小泬图片 | 日韩一卡2卡3卡4卡乱码免费 | 男人的天堂av社区在线 | 美女脱内衣露出了奶头无马赛克图片 | 中国一级特黄真人毛片 | 日日夜夜免费精品 | 亚洲精品午夜 | 成人在无码AV在线观看一 | 992tv国产精品福利在线 | 在线观看国内自拍 | 偷偷狠狠的日日高清完整视频 | 免费观看羞羞的事情网站 | 精品欧美小视频在线观看 | 啊灬啊别停灬用力啊动态图 | a黄视频| 成年97| 亚洲AV福利天堂一区二区三 | 欧美性色欧美性A片色欲 | 免费观看日韩大尺码观看 | www亚洲天堂| 在线欧美 精品 第1页 | 大片免免费观看视频播放器在线观看 | 成年人免费黄色 | 日本国产精品无码一区免费看 | 被绑在坐桩机上抹春药 | 99久久精品久久久 | 簧片电影大全网站 | 国产精品热久久高潮AV袁孑怡 | 美果tv免费在线观看电视剧 | 国产大片91精品免费看3 | 伴郎粗大的内捧猛烈进出视频观看 | 国产精品99久久免费黑人人妻 | 欧美成人精品第一区二区三区 | 日韩内射美女人妻一区二区三区 | 日本乱妇18日本乱妇18p | 宅男66在线网站 | 亚洲午夜电影 | 放荡乱h伦文粗大hhh高潮 | 亚洲国产综合另类视频 | 精品久久久久久 | 男男体育生乱yin高H肉汁 | 国产 亚洲 网友自拍 | 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 | 韩国免费特一级毛片 | 国产亚洲中文日本不卡二区 | 日本欧美国产 | 国产亚洲精品久久久久婷婷瑜伽 | 亚洲精品高清AV在线播放 | 性色AV性色生活片 | 国产AV无遮挡喷水喷白浆小说 | 波多野结衣在线网站 | 久久久综合九色合综国产 | 国产国语一级毛片中文 | 国产人成精品综合欧美成人 | 88海外华人免费 | 日本三级香港三级人妇 下载 | 色青片大全电影国语 | 欧美高清在线视频一区二区 | 无人视频免费观看免费直播下载 | 国产黄色片网站 | 么公又大又硬又粗又长 | 国产真实乱人偷精品人妻69 | 国产专区_爽死777 | 狠狠色很很鲁在线视频 | 黑人巨茎大战欧美白妇 | 亚洲一级免费毛片 | 美女裸体黄网站18禁免费看影站 | 伧理片午夜伧理片 | 亚洲免费国产在线日韩 | 国产一二三区有声小说 | 日韩免费高清大片在线 | 人人澡 人人澡 人人看欧美 | 尤物精品国产第一福利三区 | 免费黄网站在线观看 | 九九夜夜妹子 | 久久亚洲精品AV成人无码 | 日韩色情图片小说AV一区 | 品色堂永久 | 国产乱码卡一卡二卡三新区 | 女人18毛片水真多免费播放 | 亚洲欧洲中文日韩久久AV乱码 | 久久精品影视 | 欧美FREE性护士VIDE0SHD | 国产乱码卡二卡三卡43 | 国产婷婷精品AV在线 | 四虎在线免费观看 | 看黄色免费网站 | 中国农村自拍hdxxxx性自拍 | 午夜福利观看视频1 | 国产AV99激情久久无码天堂 | 欧美三级日韩三级 | 黄色软件草莓丝瓜秋葵安卓下载破解版大全 | 亚洲精品一区二区三区四区五区 | 国产精品成人四虎免费视频 | 精品久久伦理中文字幕 | 99久久精品无码一区二区毛片 | 卯月麻衣作品 | 亚洲 欧美 日韩 国产 视频 | 中国丰满熟女A片免费观 | 免费看欧美换爱交换乱理伦片 | 精品国产乱码久久久久APP下载 | 办公室漂亮人妇在线观看 | 国产精品福利一区二区 | 中文字幕你懂的 | 波多野结衣在线一区 | 人妻熟女 视频二区 视频一区 | 亚洲情A成黄在线观看动漫软件 | 色之综合天天综合色天天棕色 | 天天操天天干天天 | 国外欧美一区另类中文字幕 | 韩国理论片在线观看片免费 | 最近韩国日本免费观看 | 国产精品自产拍在线观看中文 | 国产婷婷午夜精品无码A片 国产婷婷色综合AV蜜臀AV | 色中色| 精品国产免费观看久久久 | 国产精品一区在线观看你懂的 | WWW国产精品人妻一二三区 | 国产精品久久久久国产精品三级 | 亚洲欧美中文字幕高清在线 | 丝瓜视频未满十八严禁 | 99国模沟沟茂密的黑森林 | 亚洲精品中文一区二区在线 | 国产在线观看黄色 | 日本日本熟妇中文在线视频 | 91蜜桃麻豆 | 久久久久久一级毛片免费野外 | av电影全集 | 免费一区二区三区久久 | www日本免费| 95国产欧洲精华液 | www.av视频在线观看 | 在线色小说 | 亚洲最大色 | 欧美日本一二三区 | 在线观看黄页 | 性生生活色欲片性按摩 | 麻豆文化传媒官方网站入口免费 | 国产精品一区二区三区高清在线 | 久久一级黄色片 | 水蜜桃传媒B站 | 亚洲美女毛茸茸 | 一级v片 | 级R片内射在线视频播放 | 日本H无码黄肉动漫后宫 | 在线天堂最新版资源 | 小SAO货边洗澡边CAO你 | 欧美黄区 | 精品欧美一区二区在线观看欧美熟 | 色-情-伦-理一区二区三区电影 | 亚洲欧美一区二区成人片色欲AV | 网站免费满18成年在线观看 | 国产人妻精品久久久久久很牛 | 善良的小峓子在线高清免费观看完整中文版 | 一本色道久久88一综合 | 午夜性做爰A片免费看 | 亚洲AV无码乱码A片无码18禁 | 免费被黄网站在观看 | 欧美黑人猛性暴交 | 美女毛毛片 | 日韩精品成人 | 久久国产精品一区免费下载 | 欧美与黑人午夜性猛交久久久 | 欧美xxxx免费| 国产亚洲精品久久久久久久久动漫 | 国产精品流白浆在线观看 | 精品无码乱码AV | 1区2区3区4区产品在线线乱码 | 国产中字| 影音先锋资源站av资源 | 中文字幕日韩在线 | 精品久久久久久综合日本 | 最近中文字幕MV在线视频看 | 中文字幕熟女人妻理论片 | 韩国三级精品 | 国产精品成人无码A片免费软件 | 大山里真实刮伦小说 | 边做边爱免费完整版视频播放 | 波多野たの结衣A片 | 色综合久久丁香婷婷 | 人妻仑乱A级毛片免费看 | 亚洲一级毛片免费观看 | 黄色在线观看视频 | 亚洲一区综合图区 | 亚洲一区二区师生制服 | 中文字幕无码A片久久 | 成人免费播放视频20242024 | h视频免费 | 久久综合久久综合久久 | 亚洲四播房 | 高潮无遮挡成人A片在线看 高辣H文黄暴糙汉文H | 草久在线视频 | 国产成a人亚洲精v品久久网 | 91视频com | 开心色网| 五月丁香合缴情网 | 91综合在线视频 | 国产人妻无码区免费九色 | 96精品视频在线播放免费观看 | 一个色综合亚洲色综合 | 欧美在线视频精品 | 国产麻豆9l精品三级站 | 丁香花视频在线播放免费观看 | 日韩国产第一页 | 人人爽久久涩噜噜噜AV | 久久国产免费观看精品 | 久久成人AV精品国产麻豆 | 欧美多人三级级视频播放 | 久久国产精品高清一区二区三区 | 三级视频网站 | 男人J桶进女人下部无遮挡A片 | 亚洲一区黄色 | 国产免费啪嗒啪嗒视频看看 | 欧美精品一区二区黄A片 | 99久久久无码国产AAA精品 | 亚洲日本三级 | 分享一个无毒不卡免费国产 | 国产麻豆9l精品三级站 | 忘忧草日本在线社区WWW电影 | 亚洲入口无毒网址你懂的 | 久久久国产精品免费A片3D | 少妇被躁爽到高潮无码A片小说 | 伦理影视 | 8x成人在线| 3d肉 蒲团 | 亚洲a区视频 | 亚洲三级天堂 | 欧美黄色精品 | 人人模人人干 | 高清国产免费观看视频在线 | 我可以再往深处一点吗视频 | 在线看成品视频入口免 | 三级毛片三级毛片 | 床戏吻戏裸戏视频超长 | 国内卡一卡二卡三免费网站 | 老湿影院色情下 | 色姑娘久久综合网天天 | 亚洲欧洲一区二区三区在线 | 伊人网综合在线 | 久青草免费在线视频 | 亚洲欧美日本国产 | bt天堂网www天堂 | 亚洲欧美一区二区三区久本道 | 四虎国产成人免费观看 | 日韩综合在线视频 | 亚洲精品无码成人A片在线漫画 | 中文字幕第 | 久久精品国产99国产精偷 | 91在线影院| 色偷偷AV老熟女色欲涩爱 | 在线看片| 一级淫片bbbxxx | 欧美高清一区二区三 | 色悠悠| 亚洲欧洲日产国产 最新 | 国产成人18黄网站在线观看网站 | 色情AV亚洲精品一区二区 | 成人免费永久在线观看视频 | 精品欧美成人无码专区毛片视频 | 极品夜夜嗨久久精品17c | 久久久久亚洲精品影视 | 三A级做爰片免费观看春光乍泄 | 成人网18免费视频 | 九九精品免费观看在线 | 色天使视频 | 日韩免费一级毛片 | 亚洲人成www在线播放 | 黑人狂躁日本妞免费视频 | 视频一区国产在线第一页 | 91精品国产91久久综合 | 肉乳床欢无码A片动漫无尽 肉乳乱无码A片观看免费 | 黄网址免费 | 精品欧美成人高清在线观看2021 | 久久网免费视频 | 国产人妻精品久久久久久很牛 | AV亚洲产国偷V产偷V自拍 | 伦理电影播放伦理电影 | 99蜜桃臀久久久欧美精品 | 性欧美暴力猛交xxxxx高清 | 你懂的在线观看视频 | 国精产品一二三区传媒公司 | 亚洲国产欧美中文手机在线 | 无限资源在线视频完整版观看 | 欧美又粗又长A片XXOO在线看 | 人妻AV久久一区波多野结衣 | 天天躁日日躁狠狠躁 | 无码A片激情做爰视频在线观看 | 丰满五十老女人性视频 | 欧美jizz19性欧美 | 六月婷婷缴清综合在线 | 久久九九有精品国产56 | 国产成人精品18 | 国产精品自在拍在线播放 | 5278欧美一区二区三区 | 国产免费无码成人A片在线观看 | 久久97精品久久久久久清纯 | 日本中文字幕在线视频站 | 免费光看午夜请高视频 | 国产AV亚洲精品久久久久软件 | 深爱激情五月网 | 奇米四色77777 | 色综合h | 最近新中文字幕大全高清 | 99久热只有精品视频免费看 | 九九精品久久久久久噜噜中文 | 区久久AAA片69亚洲 | 从零开始的异世界生活第一季 | www国产亚洲精品久久网站 | 黄在线网站| 欧美乱子YELLOWVIDEO | 亚洲精品一区二区另类图片 | 2021手机日本卡一卡二新区 | 久久精品人妻无码一区二区三区V | 亚洲欧美激情图片 | 亚洲天天在线日亚洲洲精 | 八匹狼影院 | 亚洲国产成人综合精品 | 九九香蕉视频 | 亚洲熟伦熟女新五十路熟妇 | 免费一级肉体全黄毛片 | 美国三圾片在线观看 | 中文精品一卡2卡3卡4卡国色 | 波多野结衣久久精品 | 蝴蝶谷成人 | 校草上课时狂揉我下面 | h片在线观看 | 色免费观看 | 国产69精品久久久久人妻刘玥 | 99热这里只有精品8 99热这里只有精品9 | 韩国伦理电影播放伦理电影网站 | 日本在线无码中文一区免费 | 奇米影视四色影音先锋 | 激情A片久久久久久播放 | 51毛片| 亚洲免费国产在线日韩 | 亚洲AV永久综合在线观看尤物 | av影音先锋影院男人站 | 日韩一区二区三区视频在线观看 | 亚洲国产精品久久精品成人 | 亚洲国产成人在人网站天堂 | 国产激情视频在线播放 | 一区二区网站 | 美国免费高清一级毛片 | 日本特黄无码毛片在线看 | 欧美激情A片久久久久久 | 亚洲人成网77777色在线播放 | WWW.亚洲最大夜色伊人 | 亚洲国产成人精品无码区99 | 精品欧美亚洲韩国日本久久 | 国产精品久人妻精品 | 黄色网址网站在线观看 | 精品国产中文字幕 | 免费成人毛片 | 成人在线网 | 老师邪恶影院a啦啦啦影院 老师我好爽再深一点办公室 | 欧美日韩高清一区 | 精品一卡2卡三卡4卡三卡免费 | 亚洲爽爽爽爽爽A片黄漫画 亚洲天天干 | 国产精品国产三级国产AV剧情 | 欧美性受| stranger things| 免费国产凹凸在线视频 | 激情 亚洲 欧美 另类 小说 | 中文字幕在亚洲第一在线 | 肉多NP 巨H校园| 老师洗澡让我吃她胸的视频 | 天天操天天添 | 日韩精品免费看 | 欧美精品在线一区二区三区 | 日韩视 | 日本精品人妻无码免费大全 | 精品日本亚洲一区二区三区 | SM女人捆绑调教网站A片软件 | 91秒拍国产福利一区 | 久久国产精品久久久久久久久久 | 狠狠综合久久久久综合 | 国产精品亚洲w码日韩中文 国产精品午夜自在在线精品 | 我和丰满岳疯狂做爰 | 欧美人人爽 | 日本一卡二卡三四卡在线观看免费视频 | 国产精品69白浆在线观看免费 | 伊伊人成亚洲综合人网 | 狠狠色综合7777久夜色撩人 | 国语自产拍在线观看偷拍 | 在线黄视频网站 | 久久精品国产清自在天天线 | 就要爱综合 | 窝窝午夜看片 | 欧美人与禽ZOZO性伦交视频 | 在线观看视频一区 | 伦理电影我不卡87 | 久99久热只有精品国产男同 | 日本高清免费一本视频无需下载 | 野花日本大全免费观看6高清版 | 91精品天美精东蜜桃传媒免费 | 成熟少妇大片免费看 | 在线视频播放免费网站视频在线 | 欧美色贴图| 国产理论剧情大片在线播放 | 亚洲中文字幕无码一去台湾 | 精品国产人妻一区二区三区久久 | 久久久久国产视频 | 国精产品一区一区三区M | 人人干人人看 | 中国夫妻性生活片 | 三级伦理在线电影日本 | 操老女人逼 | 四虎影视永久在线精品 | 婷婷色5月 | 色网址| 佐伯ゆきな | 美女直播洗澡的软件下载 | 国产精品麻豆 | 波多野结衣在线不卡 | 久久精品国产99国产精2020丨 | 国产av1插花菊综合网 | 99在线免费观看视频 | 欧洲每年百万吨电子垃圾流向亚非 | 欧美V亚洲V综合V国产V | 国产又粗又大又黄 | 国产免费a | 国产乱对白精彩在线播放 | 99精品国产免费观看视频 | 男人晚上适合偷偷看的污污 | 40集电视剧全部免费 | 国产人妻精品无码AV | 天书中文网| 精品人妻伦一二三区久久AAA片 | 99视频免费播放 | 三级网址在线 | 亚洲国产成人A片乱码 | 久久精品99国产精品日本 | 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 | 一本色道在线久88在线观看片 | 亚洲资源站 | 深爱五月综合网 | 久久99精品久久久久久噜噜丰满 | 抖音C人版奶片7028 | 刘可颖AV | 国产亚洲欧美日韩v在线 | 亚洲精品九色在线网站 | 激情销魂乳妇奶水小说 | 韩国A级做爰片无码费看蚯蚓 | 香蕉久久夜色精品国产尤物 | 欧美精品第三页 | 网站在线观看你懂的 | 翁莹情乱50章三人同床 | 伊人网综合 | 蜜桃精品AV无码喷奶水小说 | 亚洲 欧美 字幕 一区 在线 | 经典国产乱子伦精品视频 | 午夜亚洲影院在线观看 | 精品久久久久久无码中文字幕 | 日本高清WWW色视频网站 | 亚洲精品高清国产一线久久97 | 精品一区二区三区波多野结衣 | 免费网站高清在线观看视频 | 韩国伦理片国语伦理片 | 日本三级韩国三级在线观看a级 | 亚洲精品嫩草AV在线观看 | 国产全黄a一级毛片视频 | 最近中文字幕免费大全8一 最近中文字幕免费国语6 | 久久精品最新免费国产成人 | 97久久影院 | 亚洲欧洲日产国无高清码图片 | 亚洲人成色777777精品音频 | 免费不卡视频一卡二卡 | 亚洲成av人片在线观看 | 亚洲A片无码精品毛片色戒 亚洲A片无码精品毛片 | 国产中文视频 | 2024一本久道久久综合狂躁 | 苏南现代化建设示范区规划 | 我们的生活第七季在线观看免费高清 | 4虎影院网址大全 | 男女做爰猛烈啪啪吃奶真人免费 | 五月丁香激色婷五月天 | 中年国产丰满熟女乱子正在播放 | 美国的毛片免费的 | 国产偷抇久久精品A片69 | 久热精品6 | 黄色资源在线观看 | 亚洲视频一区在线 | 婷婷开心色四房播播 | 尤物精品国产第一福利三区 | 午夜影院费试看 | 欧美成人黑人性视频 | 男女后式激烈GIF动态图 | 欧美一区二区视频在线观看 | 校花被扒衣吸乳羞羞漫画 | 乌龙院在线观看免费观看完整版 | 中文字幕韩国三级少妇在线光看 | 亚洲国产精品嫩草影院永久 | 一本大道熟女人妻中文字幕在线 | 国产成人精品福利网站在线观看 | 四色导航| 日本午夜色 | 色综合久久丁香婷婷 | 久久综合九色综合桃花 | 精品亚洲一区二区三区在线播放 | 无套内谢少妇毛片A片999 | 黄色成年人视频 | 亚洲AV无码一区东京热在线播放 | 2024亚洲 欧美 国产 日韩 | 波多野结衣办公室33分jian情 | 久青草国产免费观看 | 国产操操| 日本无卡码高清免费视频v 日本无码MV免费视频在线 | 无码137片内射在线影院 | 99成人在线视频 | 日本不卡免费高清视频 | 18岁禁看网站 | 成人免费aaaaa毛片 | 国产ts人妖另类 | 福利视频一二三在线观看 | 久久99爱视频 | 亚洲伦理在线观看 | 激情文学小说区另类小说同性 | 午夜时刻免费入口 | 久久综合九色综合97手机观看 | 久久日韩精品无码一区 | 亚洲AV国产精品无码精 | 亚洲精品沙发午睡系列 | 精品AV综合导航 | 国产毛片久久久久久国产毛片 | 亚洲成AV人片在线观看WV | 99国产精品久久 | 欧美性猛交一区二区三区精品 | 免费看少妇高潮A片黄 | 久久精品国产亚洲欧美 | 麻豆映画传媒新剧免费观看 | 日本免费网址大全在线观看 | wwwwxxxx国产| 蜜桃TV成人网站免费打开 | 免费精品国产日韩热久久 |