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

conhecimento

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

khtmfocw

11 Oct 2025(atualizado 11/10/2025 às 00h04)

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

Temas

Compartilhe

Homem é morto a tiros em Novo Repartimento, no sudeste do Pará'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 feases do pokerits 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

Zambia_vs_Morocco_CAF_World_Cup_Qualifiers_stats_amp_head-to-head_-_BBC_Sport.txt

Skate: nomes experientes exibem talento no Intercolegial lazer e os entretenimento lazer.

GRáFICOS

nos eixos

'It's a way of the sea returning the trash to us' Why plastic-filled 'Neptune balls' are washing up on beaches.txt

'Nem tudo s?o flores': Diretor de Mark of the Deep, soulslike brasileiro, fala sobre a trajetória de desenvolvimento do jogo explorar e os lazer explorar.

Navegue por temas

Campanha do agasalho 2025: Veja como fazer doa??es em Juiz de Fora Carlo Acutis é canonizado no Vaticano e se torna o 1o santo da gera??o millennial Nem de menos, nem demais: como saber o quanto adolescentes devem treinar e o impacto do excesso na saúde física e mental Avó de jovem curado relata emo??o em canoniza??o de Carlo Acutis: 'Gratid?o e fé' Motociclista morre após ser atingida por carro em cruzamento de Dourados; veículo capotou Secretária de Saúde é exonerada e prefeitura cria comitê gestor em Campo Grande Rima, CAOS e malandragem: rapper Alee estreia nos palcos do Circo Voador Punho cerrado contra o racismo: Sesc fará campanha no Intercolegial Goleadas, supera??o e despedidas marcam fim do semestre do Intercolegial Punho cerrado contra o racismo: Sesc fará campanha no Intercolegial
日本久久久WWW成人免费毛片丨 | 国产女人毛多水多A片视频 国产欧美精品一区二区三区-老狼 | 久久一级黄色片 | 风韵饥渴少妇在线观看 | 国产精品人成视频免费999 | 97日日碰人人模人人澡 | 黄色在线播放网址 | 久青草国产在视频在线观看 | 亚洲AV无码一区二区A片成人 | 麻豆文化传媒官方网站入口免费 | 国产电影无码午夜在线播放 | 另类天堂 | 国产MD视频一区二区三区 | 亚洲热影院 | 色悠久久久久综合欧美99 | 影音先锋av最新资源站 | 好男人午夜影院 | 欧美亚洲丝袜 | 搞黄网站免费观看 | 婷婷熟女在线视频 | 日韩a视频 | 免费一极毛片 | 国产成人综合洲欧美在线 | 不良网站在线观看 | 人与兽黄色毛片 | 99久久国产综合精品女不卡 | 日本人妻仑乱少妇A级毛片潘金莲 | 91人人看 | 无码中文资源在线播放 | 久久福利一区 | 色网在线播放 | 日韩一区二区视频在线观看 | 手机在线国产精品 | 亚洲男人97色综合久久久 | 中文字幕国产精品 | 国产网站黄 | 肉乳床欢无码A片动漫无尽 肉乳乱无码A片观看免费 | 涩涩网站在线观看 | 天堂8中文在线最新版在线 天堂8在线天堂资源在线 | 色欲久久精品AV无码 | 国产真实乱人偷精品人妻图 | 日本三级在线观看511 | 成人wwxx| 大陆一级毛片免费高清 | 欧美一区二区视频97色伦 | 色交网站 | 成年在线影视免费观看 | 毛片新网址| 一区国产传媒国产精品 | 勿言推理日剧在线观看 | 久久国产精品人妻无码 | 午夜爱爱免费视频体验区 | 韩日一区二区三区 | 国产精品51麻豆CM传媒 | 青草草在线视频 | 国产精品人妻无码久久久2024 | 久久一级 | 国产91精品久久久久久久 | 国产黄色片在线看 | 婷婷人人爽人人爽人人A片 婷婷色情 | 欧美一区二区三区激情视频 | 欧美日韩国产一区二区三区 | 国产又粗又爽又猛的视频A片 | www.狠狠爱| 欧美手机手机在线视频一区 | 日本免费网站 | 999xxxx | 国产精品无码一区二区在线A片 | 妖精视频一区二区三区 | 国产高清不卡一区二区三区 | 玖玖爱精品视频 | 一道本不卡高清专区 | 欧美毛片 | 国产亚洲日韩精品激情 | 年轻漂亮的妺妺中文字幕版 | 亚洲大肥女ass | 孩和我做爽死我了 | 国产激情无码激情A片小说 国产激情艳情在线看视频 国产极品JK白丝喷白浆免费视频 | 亚洲国产精品嫩草影院在线观看 | 国产人妻精品午夜福利免费不卡 | 国产精品久久久久久久久久久久 | 玩弄丰满奶水的女邻居 | 韩国三级日本三级在线观看 | 丁香五月综合缴清中文 | 狠狠色丁香婷婷综合久久片 | 97在线免费视频观看 | 女人爽得直叫免费视频 | 深爱五月激情 | 国产免费av片在线观看 | 69国产成人综合久久精品 | 成年黄色网 | 日韩成人av在线 | 八匹狼影院 | 色情无码WWW视频无码区下载 | 我们的生活第七季在线观看免费高清 | 91亚洲精品福利在线播放 | 97精品久久久久中文字幕 | 狠狠狠狠狠狠干 | 狠狠色视频| xx顶级欧美熟妞xxhd | 成人亚洲A片V一区二区三区小说 | 精品人妻无码一区二区三区4 | 免费妞干网 | 成人看片 | 任我鲁精品视频精品 | 国产成人精品日本亚洲11 | 久久99国产精一区二区三区 | 美女裸身照(无内衣)动态图 | 撸撸看电影 | 厨房玩弄丰腴尤物美妇 | 99九九99九九九视频精品 | 不卡无在线一区二区三区观 | 日韩欧美一区二区三区四区 | 亚洲精品高潮久久久久久日本 | 国精产品一区二区三区 | 亚洲精品一区国产 | 久久99精品视频 | 日韩色情无码一本二本三本 | 高清乱码中文 | 91欧美精品综合在线观看 | 日本精品中文字幕有码 | 日本人强伦姧人妻A片 | 激烈啪啪啪动态图 | 国产熟妇精品伦一区二区三区 | 午夜精品福利在线导航小视频 | 欧美色鬼| 欧洲午夜福利视频在线观看 | 精品无码欧美黑人又粗又 | 色迷迷网站 | 小视频黄站网黄 | 成人做爰片免费网站 | 一本到国内在线视观看 | 伦理片秋霞网伦理片 | 国产视频1 | 99久久精品国产一区二区成人 | 中国xxxx做受视频 | 日本欧美一区二区三区免费不卡 | 亚洲看片无码免费视频 | 欧洲欧美人成视频在线 | 伊人中文字幕在线观看 | 毛片基地美国 | 上课时勃起了女同学帮我口 | 丝袜视频网在线观看 | 在线播放国产精品 | 一级毛片在线看在线播放 | 国产精品玖玖玖在线观看 | 美国毛片在线 | 好想被狂躁A片免费无码 | 91字幕| 成人无码高潮AV在线观看 | 日本aⅴ永久免费网站www | 国产福利在线观看片 | 忘忧草日本在线社区WWW电影 | 色网站在线免费观看 | 伊人久久综合成人亚洲 | 2022国产男人亚洲欧美天堂 | 视频在线观看国产 | 国内久久久久久久久久 | 久青草国产观看在线视频 | 亚洲午夜久久影院 | 啪啪啪免费视频 | 亚洲精品久久99蜜芽尤物TV | 久久久久久网址 | 五月婷婷六月综合 | 第一福利视频 | 日本欧美不卡一区二区三区在线 | 2020国自产拍精品网站不卡 | 最新中文字幕在线资源 | 久久国产主播福利在线 | 国产成人精品男人免费 | 免费观看又色又爽又黄的软件 | 久久午夜免费视频 | 制服丝袜中文字幕在线 | 欧美一级久久久久久久久大 | 欧美最猛黑人猛男无码视频 | 丁香花五月婷婷 | 国产色情AAA级AAA电影 | 国产精品白浆一区二小说 | 欧美成人精品第一区首页 | 亚洲一级成人 | 免费观看黄色a一级视频播放 | 国产久热在线观看视频 | 国产精品久久久久国产精品三级 | 亚州老熟女A片AV色欲小说 | 成年必看视频在线观看 | 公与妇仑乱HD | 久久久久久综合对白国产 | 国产JJZZJJZZ视频免费看 | 女色综合| 日本成熟人妻理伦无码新片 | 99热久久这里只有精品 | 老师没戴套子C了我一天视频 | 男人扒开女人腿桶免费视频 | 国产网曝门亚洲综合在线 | 天堂网av2018 | 国产精品久久久久久久A片冻果 | 嗯啊好爽视频 | 最近最新中文字幕高清免费 | 日本黄色免费网站 | 成人网站色情WWW免费 | 性freexxxxhd欧美在线 | 国产v国产v片大片线观看网站 | 最近最新免费中文字幕MV | 亚洲精品在线免费 | 老牛无码人妻精品1国产 | 偷拍精品视频一区二区三区 | 99国产精品久久 | 桃花综合久久久久久久久久网 | 婷婷精品在线 | 99热手机在线观看 | 久久AV国产麻豆HD真实 | 欧美色啪 | 天天影视色欲 影视 | 亚洲狠狠色丁香婷婷综合 | 久久久欧美国产精品人妻噜噜 | 色干干 | 人妻体内射精一区二区三区 | 色综久久| 8050午夜一级全黄毛片 | 韩国三级欧美三级国产三级 | 三级福利视频 | 无人视频在线观看视频高清视频 | 色多多深夜福利免费观看 | 99久久免费精品 | 国产永不无码精品AV永久 | 最近免费中文字幕大全高清大全 | 亚洲精品亚洲人成人网裸体艺术 | 91精品国产高清久久久久久 | 久久国语精品 | 国产成人精品一区二区 | 天天摸天天碰色综合网 | 最近韩国日本免费高清观看直播 | 精品人妻无码一区二区三区牛牛 | 成年人黄色免费网站 | 精品1区2区3区产品乱码 | 日韩射吧 | 精品久久久久久久高清 | 久久成人小视频 | 亚洲欧美日韩中文字幕久久 | 国产精品成人国产乱 | 99久久精品国产一区二区 | 真人试爱视频120分钟 | 美女张开腿给男人桶爽久久 | www日 | 成人做爰A片三免费视频 | 99久久国产露脸精品麻豆 | 最近免费中文字幕大全免费版视频 | 日韩伦理电影秋霞影院 | 家庭教师波多野结衣在线观看 | www.色网 | 天堂网2021天堂手机版 | 人人妻人爽A片二区三区 | 国内外成人色情视频 | 国精产品自偷自偷综合下载 | 欧美视频一区在线 | 国产又粗又黄又爽的A片动漫软件 | 欧美日韩一区二区不卡三区 | 亚婷婷洲AV久久蜜臀无码 | 日本一卡二卡3卡四卡无卡国色天香网入义站 | 亚洲精品无码国产爽快A片 亚洲精品无码成人A片在线软件 | 伊人论坛| 国产三级日本三级在线播放 | 亚洲国产成人精品动漫 | 久草草在线 | 一圾片在线观看 | 樱花草免费视频在线观看WWW | www.日日爱| 丰满大码熟女在线播放 | 精品国产乱码久久久久久人妻 | 国产免费成人在线视频 | 一色桃子中文字幕人妻熟女作品 | 国产精品亚洲а∨天堂2021 | 高清3d肉蒲团 | 国产人妻人伦精品熟女麻豆 | 色综合天天综合网站中国 | 九九国产 | 国产精选 第1页-要看tv | 国产福利美女福利视频免费看 | 久久久中日AB精品综合 | 国产精人妻无码一区麻豆 | 国产一区二区精品久久91 | 国产亚洲精品久久久久5区 国产亚洲精品久久久闺蜜 国产亚洲精品久久久999无毒 | 欧美变态暴力牲交VIDEOS | 特级毛片AAAAAA | 黄色大片aa| 青草草在线 | 深夜特黄a级毛片免费播放 深夜日韩 | v天堂中文在线 | 成人无码区免费A片视频韩国 | 毛片性生活 | 亚洲免费福利在线视频 | 中文字幕在线视频一区 | 日韩福利视频高清免费看 | 四虎永久免费地址入口 | 成人免费又大又爽A片视频 成人女人A级毛片免费软件 | 日产乱码卡1卡2卡三卡四在线 | 麻豆自制传媒 最新网站 | 日韩美女视频一区 | jul-179在线中文字幕 | 亚洲三级影院 | 欧美jizzhd精品欧美高清 | 精品AV国产一区二区三区 | 精品国产乱码久久久久久乱码 | 蜜桃在线线免费观看视频 | 国产黄色在线免费观看 | 精品国产乱码久久久久久夜深人妻 | 亚洲乱码无人区卡1卡2卡3 | 波多野结衣一区2区3区 | 最近中文字幕免费国语6 | 性色做爰片在线观看WW | 灌满到腿抽搐合不拢BL总受 | 警察锅哥40集电视剧免费完整版 | 欧美精品xxx | 六月丁香久久丫 | 中国少妇内射XXXX狠干 | 超熟女专门志 | 最美白嫩的极品美女ASSPICS | 极品福利视频 | 日韩欧美中文字幕无码 | 曰本女人一级毛片看一级毛 | 五月婷婷欧美 | 狠狠精品干练久久久无码中文字幕 | 国产在线看片免费视频 | 欧美视频日韩视频 | 老太奶性BBWBBW在线观看 | 就要干 | 国产精品A久久20242024 | 国产成人综合亚洲亚洲欧美 | 欧美AAAAAABBBBB | 精品久久伦理中文字幕 | 国产亚洲3p无码一区二区 | 欧美亚洲桃花综合 | 四房婷婷在线视频播放 | 中文字幕日本无码少妇 | 91精品国产综合久久精品 | 伊人任线任你躁 | 少妇被躁爽到高潮无码久久 | 丰满女邻居做爰BD | 国产美女啪啪 | 久久综合九色综合国产 | 78果冻传媒91制片厂 | 国产精品V无码A片在线看 | 国产JIZZJIZZ免费看 | 亚洲精品v欧美精品动漫精品 | 中文字幕第1页 | 欧美一道本一区二区三区 | 精品精品国产自在久久高清 | 老司机午夜精品网站在线观看 | 日本三级电影在线看 | 国产人妻精品午夜福利免费不卡 | 久热国产vs视频在线观看 | 久久精品国产99国产精品免费看 | 性生交大片免费看A片直播 性生生活色欲片性按摩 | 下流女孩| 免费看黄色片网站 | 打开美人妻的两腿 | 日韩午夜 | 国产日产精品久久久久快鸭 | 一机毛片 | 找国产毛片看 | 最新中文字幕在线资源 | 日本女人毛茸茸 | 日日碰狠狠躁久久躁96 | www四虎在线高清 | 黑人大战白人欧美系列 | 最近最新中文字幕大全免费版下载 | 国产乱码一区二区三区 | 黑人巨大进入白人美女视频 | 狠狠狠狠狠狠狠狠狠狠 | 男人边吃奶边做愛视频 | 国产熟妇搡BBBB搡BBBB搡 | 一起赏电影网 | 日本视频中文字幕一区二区 | 日本强伦姧熟睡人妻完整视频 | 2021免费一二三四区 | 玖玖免费 | 日韩精品a在线视频 | 青草视频免费在线观看 | 日本在线精品视频 | 天天操天天射天天操 | 国产偷抇久久精品A片图片 国产偷国产偷亚州清高APP | 五月婷六月丁香 | 国产婷婷综合在线视频中文 | 在线视频播放免费网站视频在线 | 在线观看免费高清电影网站 | av毛片免费看 | 大叔爱上我视频在线观看 | 两性午夜欧美高清做性 | 福利视频在线4 | 东北老女人大叫爽死啦 | 鲁鲁在线观看 | 免费成人毛片 | 中国国语对白高潮A片 | 久久久精品久久久久久 | 亚洲我射| 狠狠色噜噜狠狠狠狠69 | 美女扒开尿口给男人看 | 中文字幕视频在线播放 | 国产精品免费久久久久影院 | 幻女FREE性ZOZO交喷水 | 日韩国产成人精品视频人 | 98国产精品人妻无码免费 | 91精品久久久久久久99蜜桃 | 一级做a爱过程免费视频超级 | 午夜福利不卡在线视频 | 波多野结衣torrent | 日本波多野结衣视频 | 97人视频国产在线观看 | 精品国产免费久久久久久 | 国产AV国片偷人妻麻豆潘甜 | 中文字幕第一页在线播放 | 最近中文字幕完整在线看一 | 欧美精品无码一区二区三区老鸭窝 | 成熟人妻AV无码专区A片 | 欧美午夜精品一区二区蜜桃 | 中文精品一卡2卡3卡4卡国色 | 午夜精品九九九九99蜜桃 | 国产在线黄色 | 精品熟女少妇AV久久免费A片 | 精品动漫一区二区无遮挡 | 天天操天天干视频 | 日本三级一区二区 | 快穿之被系统肉到哭H | 看色情小说 | 免费网站高清在线观看视频 | 欧美视频在线观在线看 | 伦理片网站 | 天天操天天射天天操 | 国产精品人妻久久无码不卡 | 久久国产精品久久国产片 | 三级网址日本 | 国产传媒18精品免费1区 | 无人影院在线播放视频 | 波多野结衣一级 | 国产精品扒开腿做爽爽爽视频 | 涩涩免费视频软件 | 黄乱色伦| 图片区 亚洲 在线视频 | 欲色AV无码一区二区人妻 | 日本毛片久久国产精品 | 免费在线视频一区 | 艳妇臀荡乳欲伦1 | 四虎紧急自动转跳在线视频 | 国产免费AV片在线播放唯爱网 | 老司机免费视频福利0 | 欧美 日本 亚欧在线观看 | 欧美激情亚洲一区中文字幕 | 青娱乐极品视觉盛宴av | 国产精品婷婷五月久久久久 | 一级毛片在线免费视频 | 青草园网站在线观看 | 中国精品久久精品三级 | 亚洲女同视频 | 色老妈| 亚洲四房播 | 四虎影视四虎在钱免费 | 久久国产这里只精品免费 | 国产麻豆一精品AV一免费软件 | 久久久久久午夜精品 | 91精品一区二区三区久久久久 | 日韩极品视频 | 在线成人综合色一区 | 香蕉伊人不卡在线看 | 无码专区aaaaaa免费视频 | 亚洲AV国产精品无码市川京子 | 婷婷色人阁 | 精品欧美一区二区在线观看欧美熟 | A片放荡少妇高潮喷水小说 A片高潮抽搐揉捏奶头视频 | 国产毛片又爽又大A片 | 最近高清中文在线字幕观看 | 色婷婷欧美在线播放内射 | 欧美AAAA片免费播放观看 | 国产黄色免费在线观看 | 色爱区综合激情五月综合激情 | 亚洲欧美日本综合一区二区三区 | 亚洲精品久久久久久久蜜桃 | 欧美色婷婷 | 第九影院2017韩国伦理电影 | 亚洲三级成人 | A欧美爰片久久毛片A片 | 色爱区综合激情五月综合色 | 四虎影视永久无码精品 | 国产综合成人久久大片91 | xxxxx在线| 在线看电影的网站 | 亚洲精品一区二区国产精华液 | 99自拍视频在线观看 | 教官脔到她哭H粗话H好爽视频 | 久久天天躁狠狠躁夜夜avapp | 中文高清无码人妻 | 色视频网站色视频播放 | www.狠狠爱| 玩高中女同桌肉色短丝袜脚文 | 中文国产乱码在线人妻一区二区 | 日日躁夜夜躁狠狠久久AV | 成人又色又爽的免费网站 | 丁香婷婷视频 | 成人影视大全 | 色撸网在线视频 | 吕知樾张津瑜百度云 | 将军边走边挺进她H树林 | 公交车艳妇系列1一40 | 四虎影视网站 | 日本jizz中国 | 性老少xxxhd 性久久久久久久久久 | 国产精品乱码一区二三区 | 日本三区四区免费高清不卡 | 欧美色在线精品视频 | 97精品视频在线观看 | 肥胖BMGBMGBMG多毛图片 | 麻豆免费版| 浴室里强摁做开腿呻吟的漫画 | 亚洲电影 欧美电影 | 边吃奶边狠狠躁日韩A片 | 亚洲一线二线三线品牌精华液久久久 | free chinese国产 | a√视频 | 玫瑰之战免费观看全集在线 | 人与猪猪 | 国产人妻人伦精品免费看果冻传媒 | 免费精品美女久久久久久久久 | 久久综合九色综合 | 亚洲免费黄网 | 好吊射视频988gaocom | 一本到亚洲网 | WWW国产| 免费啪视频在线观看视频久18 | 亚欧三级 | 欧美1卡一卡二卡三新区 | 九九在线免费视频 | 亚洲最大激情网 | 精品人妻无码一区二区三区淑枝 | 最新 国产 精品 精品 视频 | 免费永久在线观看黄网 | 中文有码视频 | 综合色就爱涩涩涩综合婷婷 | 羞羞答答.NT视频在线观看 | 与黑人大黑机巴做爰A片 | 免费观看欧美一级牲片一 | 妞干视频 | 日本黄 色 成 年 人免费观看 | 亚洲午夜精品久久久久 | 涩涩动漫网站入口 | 色欲AV在线观看国产精品 | 含着不拔出来 H 1V1 | 性一交一乱一交A片久久 | 97se亚洲国产综合自在线 | YY视频大片免费看网站 | 他用舌头给我高潮喷水在线 | 黑巨茎大战俄罗斯美女后宫 | 国产成人精品综合在线观看 | 香蕉网站狼人久久五月亭亭 | 超碰在线路98 | 欧美日韩国产一区二区三区不卡 | 日本视频播放免费线上观看 | 三级毛片黄色 | 免费三级现频在线观看免费 | 免费中文字幕一级毛片 | 国产精品对白交换视频 | 欧美激情综合色综合啪啪五月 | 欧美bbbbbxxxxx | 三级韩国三级日产三级 | 国内自拍第五一页 | 佐伯ゆきな | 午夜A理论片在线播放 | 天堂网最新 | 成人AV无码一二二区视频免费看 | 久久久久久久久影院 | 影音先锋吉吉av资源站 | 黑巨人与欧美精品一区 | 人人艹人人 | 99久久中文字幕伊人情人 | 久久国产AVJUST麻豆 | 99久久免热在线观看6 | 天天综合干 | 舌头伸进去添的我好爽高潮视频 | 成人免费黄网站 | 国产性做久久久久久 | 宝贝舒服吗好紧好多水小说 | 中文字幕在线观看网站 | 色欧美综合 | 国产成人ay手机在线观看 | 色青片大全电影国语 | 樱花草在线观看播放视频www | 久久久久久久网 | 欧美一区二区三区免费看 | 男人天堂2019 | 99久久综合精品国产 | 99国产亚洲精品久久久久久 | 欧美日韩免费在线观看 | 亚洲精品久久久一二三区 | 黄网免费 | 国产免费看插插插视频 | 国产麻豆一级在线观看 | WWW婷婷AV久久久影片 | 波多野结衣中文字幕一区二区 | 摸摸美女全身 | 日本肉肉口番工全彩动漫 | 五月网站| 日本翁熄系列乱在线视频 | 国产精品天干在线观看 | 欧美三级免费网站 | 国产精品自在自线亚洲 | 久久93精品国产91久久综合 | 狠狠操天天射 | 91精品综合 | 尹人香蕉午夜电影网 | 日韩免费观看一级毛片看看 | 公粗挺进了我的密道在线播放贝壳 | 校花裸体扒开两腿让我桶 | 天天躁日日躁狠狠躁中文字幕 | 日本丝瓜着色视频 | 亚洲美女bt | 波多野结衣在线观看一区二区 | 嗯男人r啊唔h哈 | 欧美视频第一页 | 国精产品一二二线网站 | 欧美激情视频在线观看一区二区三区 | 少妇交换做爰6 | 刘梓晨不雅视频完整版 | 成人高清网站 | 成人18免费网站在线观看 | 疯狂少妇2做爰完整版播放 疯狂少妇2做爰中文字幕 | 可以免费在线看黄的网站 | 一区二区中文字幕在线观看 | 补课H湿 1V1 PLAY| 香港日本三级在线播放 | 中文字幕在线视频网 | 一级日本高清视频免费观看 | 欧美一区二区三区不卡 | 天天综合网天天综合色不卡 | 狠狠色丁香婷婷久久综合五月 | 国产做A爱片久久毛片A片小说 | 国产精品免费大片 | 男女做爰猛烈动高潮A片色情 | 亚洲精品高清AV在线播放 | 成熟丰满毛茸茸 | 日韩欧美三区 | 中文日韩亚洲欧美字幕 | 一个人看的免费高清www视频 | 欧洲一卡2卡3卡4卡5卡欧美 | www.黄色毛片 | 久久久久久久国产精品毛片 | 国产欧美一区二区日本加勒比 | 欧美国产一区二区三区激情无套 | 精品日韩视频 | 天天摸天天干天天操 | 亚洲欧洲日产国无高清码图片 | 欧美日韩日本国产 | 中文字幕在线播 | 久久久精品国产 | 免费精品国产人妻国语麻豆 | 五月综合色婷婷影院在线观看 | 天天爱天天做色综合 | 亚洲一区免费看 | 国产情侣激情 | 亚洲国产精品久久久久久网站 | 中文字幕不卡免费视频 | 亚洲精品区无码欧美日韩 | 久久99精品久久久久久秒播放器 | 国产精品视频一区国模私拍 | 欧美日韩一区视频 | 亚洲欧美日韩_欧洲日韩 | 强伦姧人妻日韩A片 | 爆操欧美| 欧美在线一区视频 | 成人免费精品网站在线观看影片 | 欧美日韩中文一区二区三区 | 精品国精品国产自在久国产不卡 | 福利片导航 | 总攻高H巨肉各种PLAY快穿 | 亚洲精品久久久久中文字幕二区 | 国产婷婷色一区二区三区在线 | 娇妻在客厅被朋友玩得呻吟漫画 | 久久精品国产自在一线 | 日本一道在线播放高清 | 黑人两根一起强进 | 精品综合久久久久久99 | 天天操天天舔天天射 | 天天躁日日2018躁狠狠躁 | 午夜欧美日韩在线视频播放 | 精品亚洲国产成人A片在线播放 | 波多野结衣中文字幕在线观看 | 好硬啊一进一得太深了A片69 | 日韩天天操| 国产精品久久国产三级国不卡顿 | 亚洲无人区在线观看AV | 色姑娘综合网 | 亚洲小说在线图片色 | 天天干天天做天天操 | 2018av在线| 色欲AV亚洲精品一区二区 | 80电影天堂网香焦视频 | 日本一道高清一区二区三区 | 日本成人黄色 | 韩国漂亮老师做爰BD在线看 | 日韩成人av在线 | 久久99精品久久久久久园产越南 | 国产特黄特色a级在线视频 国产素人自拍 | 天堂资源8中文最新版在线 天堂资源8中文最新版 | 黄色一区二区三区 | 欧美z000zxxxx | 精品国产一区二区三区四区勃大卷 | 8x成人永久在线观看视频 | 五月天婷婷网址 | 日韩经典欧美精品一区 | 国产女女精品视频久热视频 | 中文字幕在线观看亚洲日韩 | 九九热热九九 | 国产精品无码AV在线观小说 | 色琪琪av男人的天堂 | 国产成人影院在线观看 | 午夜婷婷一夜七次郎 | 蜜臀AV色欲A片精品一区 | 亚洲日日操 | 99久久精品免费 | 麻花传媒沈芯语老师视频 | 成人五夜天 | 天美传媒新剧国产剧影视公司 | 一本久久综合亚洲鲁鲁五月天 | 在线视频免费观看爽爽爽 | 久久大蕉香蕉免费 | 91精品一区二区 | 天天av天天翘天天综合网 | 国产日韩在线欧美视频 | 久久精品7| 亚洲精品不卡久久久久久 | 最新在线黄色网址 | 中文字幕乱偷无码AV蜜桃 | 国产精品高潮呻吟AV久久床戏 | 日韩亚洲精品无码一区二区 | 真实国产乱子伦精品一区二区三区 | 国精产品一二二线网站 | 欧洲一卡2卡3卡4卡5卡欧美 | 永久免费无码AV国产网站 | 欧美操片在线观看 | 国产高清亚洲精品26u | 天天躁日日躁狠狠躁黑人躁 | 日韩一区二区三区射精-百度 | 久久久噜噜噜 | 少妇性BBB搡BBB爽爽爽四川 | 国产不卡在线 | 日本在线精品视频 | 成人午夜视频在线观看 | 国产精品亚洲精品久久国语 | 欧美成人精品A片免费一区99 | 肉蒲团dvd| 国产精品人妻在线观看 | 又色又爽又黄无遮挡的免费的软件 | GAY亚洲男男GV在线观看网站 | 久久综合色网 | 久久久无码精品成人A片小说 | 天堂在线91| 久久激情免费视频 | 亚洲国产熟妇无码一区二区三区H | 草草在线观看视频 | 天堂网站| 久久99精品久久久久久 | 2022一本久道久久综合狂躁 | 国产麻豆精品传媒AV国产在线 | 一级黄色a视频 | 欧美日韩网 | 久久久毛片 | 国产对白精品刺激一区二区 | 精品熟女少妇AV久久免费A片 | 国产人妻精品一区二区三区不卡 | 美女扒开尿口让男人桶进 | 91青青青青青爽在线 | 婷婷六月天激情 | 美女午夜福利4K视频在线观看 | 久热精品视频在线 | 国产AV寂寞骚妇 | 国产色婷婷亚洲99精品小说 | 亚洲成av人影片在线观看 | 日本免费一本天堂在线 | 最近中文字幕在线视频 | 久久草草亚洲蜜桃臀 | 亚洲乱色熟女一区二区三区蜜臀 | 亚洲 欧美 校园 春色 小说 | 成人在线视频免费观看 | 亚洲不卡高清免v无码屋 | 日韩成人免费在线视频 | 国产在线拍揄自揄视精品 | av女同| 日本小网站 | 噜噜噜在线观看播放视频 | 国产午夜福利视频一区二区32页 | 100国产精品人妻无码 | 夜夜操夜夜操 | 韩国三级日本三级美三级 | 免费观看欧美日韩亚洲 | 欧美激情视频一区二区免费 | 在线看午夜福利片 | 欧美3区 | 日本无码免费久久久精品 | 亚洲午夜久久久精品影院 | A片无码AV看免费大片在线喝奶 | 亚洲视频一区二区在线观看 | 色播欧美|