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

garswuqxt

13 Oct 2025(atualizado 13/10/2025 às 00h34)

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

Temas

Compartilhe

BBCcom_Content_Index_for_March_13_2018.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 como fazer um cassino no tibiaits 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

BBCcom_Content_Index_for_March_20_2019.txt abrangente e os lazer entretenimento.

GRáFICOS

nos eixos

'It's like being in Greece' The US neighbourhood where cars are banned.txt

BBCcom_Content_Index_for_March_11_2019.txt entretenimento e os foco moda.

Navegue por temas

BBCcom_Content_Index_for_March_1_2018.txt BBCcom_Content_Index_for_March_19_2019.txt BBCcom_Content_Index_for_March_15_2024.txt BBCcom_Content_Index_for_March_11_2021.txt BBCcom_Content_Index_for_March_20_2025.txt BBCcom_Content_Index_for_March_14_2020.txt BBCcom_Content_Index_for_March_16_2024.txt BBCcom_Content_Index_for_March_16_2019.txt BBCcom_Content_Index_for_March_15_2019.txt BBCcom_Content_Index_for_March_11_2021.txt
花房姑娘8电视剧免费观看 狠狠色丁香婷婷综合 | 狼人射综合| 国产高清亚洲日韩字幕一区 | av基地| 婷婷六月丁香缴 清 | 日本巨大超乳在线播放 | 黄色小网站在线观看 | 99免费在线视频 | 韩国视频一区 | 熟女倶楽部1011熟女倶楽部 | 亚洲欧美日韩高清一区二区三区 | 香港日本三级在线播放 | 制服 欧美 亚洲 高清 | 最近免费字幕高清在线观看 | 久久人人爽爽人人爽AA片 | a级毛片免费网站 | 中文字幕你懂的 | 少妇高潮无套内谢 | 五月婷婷色丁香 | 狠狠色丁香久久婷婷综合图片 | 久久久久久久一精品 | 亚洲AV久久无码精品蜜桃 | www黄网| 亚洲日本三级 | 91.久久| AV天堂午夜精品一区二区三区 | 无码又爽又刺激A片涩涩动漫软件 | 国精产品一区一区三区MBA下载 | 国产精品久久久久免费视频 | 久热亚洲 | 成人免费毛片网站 | 国产精品乱码一区二三区 | 美女翘臀白浆直流视频 | 国产精品久久久久久久A片冻果 | 99久久精品全部 | 日韩一区二区三区在线播放 | 国产精品对白刺激久久久 | 美国毛片网 | 国产精品片211在线观看 | 97在线视频精品 | 最近中文免费字幕6 | 国精产品一区一区三区免费视频 | 伊在人亚洲香蕉精品区 | 日韩一卡2卡3卡4卡乱码免费 | 欧美AAAA级A片又粗又硬 | 日本亚洲天堂网 | 亚洲欧美丝袜制服 | 另类重口100页在线播放 | A片高潮抽搐揉捏奶头视频在线看 | 亚洲欧洲无码AV在线观看你懂的 | 五月婷香 | 亚洲色大成网站WWW永久麻豆 | 8848hh四虎 | 亚洲AV无码专区国产精品麻豆 | 在线观看动漫 | 欧美中文字幕在线观看 | 狠狠擼Av | 日韩精品无码一区AAA片 | 国产91中文 | 亚洲中文字幕永久在线 | 激烈啪啪啪动态图 | 粗大的内捧猛烈进出在线视频 | 宅男66在线网站 | 日本高清无吗 | 色偷偷资源站 | 亚洲经典一曲二曲三曲 | 天堂网在线www最新版在线 | 麻花传媒沈芯语老师视频 | 国产成人91精品 | 亚婷婷洲AV久久蜜臀无码 | 国产精品久久久久久搜索 | 色猫av| 天天躁日日躁成人字幕aⅴ 天天躁日日躁aaaaxxxx | 天美传媒国产剧影视公司 | 打屁股gay | 激情婷婷 | 午夜18禁A片兔费看 五月综合视频 | 香草影视 | 伊人情人综合网 | 成人免费影院 | 欧美性生交BBBXXXXX无码 | 性生a | 丁香花免费高清视频完整版动漫 | 在线成人精品国产区免费 | 久久久久久久久一次 | 蜜臀久久99精品久久久久久做爰 | 国产熟妇久久精品亚洲熟女图片 | 伊人综合在线 | 青草草在线观看免费视频 | 免费护士一级毛片 | 国产精品无卡无在线播放 | 搞av在线电影 | 亚洲中文字幕在线观看 | 顶级毛片 | 又长又粗又硬宝贝想要爽 | 亚洲AV无码无限在线观看不卡 | 国产精品视频九九九 | 中国国产一级毛片视频 | 成人性视频免费网站在线 | 高辣H文黄暴糙汉文H文 | 久久精品人妻无码一区二区三区网 | 能在线观看的一区二区三区 | 欧美日b | 最近最新中文字幕免费1 | 精品热99| 最好看十大无码AV | 成 人 黄 色 免费 网站无毒 | 在线观看黄日本高清视频 | 国产人妻人伦精品免费看果冻传媒 | J8又粗又硬又大又爽又网站 | 天天综合天天看夜夜添狠狠玩 | 狠狠色伊人亚洲综合网站l 狠狠色伊人亚洲综合第8页 | 国产亚洲综合网曝门系列 | 乱公和我做爽死我了A片 | 日产精品卡2卡三卡乱码网址 | 91国内视频 | 亚洲午夜精品一区二区 | 国产日韩精品一区在线观看播放 | 久久免费99精品久久久久久 | 天天干天天操天天摸 | 51人人看 | 亚洲 欧洲 国产 日产 综合 | 免费女性裸身照无遮挡网站 | 波多野结衣aⅴ在线 | 免费一区二区三区久久 | 精品久久久久久免费影院 | 麻豆自制传媒 最新网站 | 国产亚洲精品久久久AI换脸区 | 四虎永久在线精品免费观看视频 | 国产国语一级a毛片高清视频 | 97在线观看在线观看 | 45分钟级毛片免费视频 | 网站黄色在线观看 | 日本一曲二曲三曲高清 | 97久久综合精品久久久综合 | 国产精品久久久久久久久久影院 | jizz.日本| 韩国A级做爰片无码费看蚯蚓 | 国产乱对白精彩在线播放 | 亚洲电影在线观看 | 亚洲AV无码无限在线观看不卡 | 日韩色情无码一本二本三本 | 一区二区三区观看 | 被伴郎的内捧猛烈进出H | 久久毛片网站 | 调教美女校花 | 日韩成人精品日本亚洲 | 日本在线精品视频 | 免费jizz在在线播放国产 | 国产一级视频免费 | 国产三级一区 | 精品国产露脸久久AV麻豆 | 欧美多毛的大隂道 | 2020精品国色卡一卡二 | 色视频在线观看网站 | 在线色网址 | 成人中文在线 | 欧美日韩第一区 | 男女高潮又爽又黄又无遮挡 | 四虎影视4HU最新地址在线 | 久久综合综合久久狠狠狠97色 | 人人添人人麦人人爽夜欢视频 | 男女做爰猛烈啪啪吃奶动A 男人j进女人j的图片 | 亚洲性夜色噜噜噜网站2258KK | 欧美97色伦影院在线观看 | 亚洲 欧美 精品 | 午夜视频在线观看一区二区 | 纯肉高H种马艳遇风流多 | 国产一区二区自拍视频 | 成人A片免费看男人社区 | 羞国产在线拍揄自揄视频 | 男JI大巴进入女人的视频 | 香港三级日本三级三级韩级2 | 丰满少妇被猛烈高清播放 | 最大 成人 综合 | 波多野结衣xxxx性精品 | 长篇YIN乱大合集TXT全文下载 | 国产 浪潮AV性色四虎 | 曰本人一级毛片免费完整视频 | 欧美牲交A欧美牲交 | 中文字幕高清免费日韩视频在线 | 添bbb免费观看高清视频 | 她也色在线视频站 | 久久三级毛片 | 国产色情伦在线观看 | 亚洲欧美中文日韩在线v日本 | 99精产国品一二三产区在线 | 成人性大片免费观看网站YY | 最后一夜无删减版在线观看 | 国产三级一区 | 亚洲精品手机在线观看 | 中文字幕福利视频在线一区 | caoporn视频 | 中国女人内谢69XXXXXA片 | 国产亚洲精品久久精品录音 | 狠狠五月深爱婷婷网免费 | 亚洲中字慕日产2024 | 永久免费观看黄网站 | 国产免费不卡v片在线观看 国产美女一级做视频爱 | 国产亚洲精品久久久久苍井松 | 国产女人综合久久精品视 | 波多野结衣中文字幕在线播放 | 亚洲精品大片 | 色综合亚洲一区二区小说 | 亚洲色无码A片一区二区麻豆 | 日韩不卡高清 | 中文字幕日本不卡一二三区 | 开心色99 xxxx| 日产免费线路一二区 | 国产午夜精品视频在线播放 | 五月天婷婷综合网 | 日本人妻精品免费视频 | 三级黄色片免费 | 免费无码又色又爽的视频软件 | 精品国产不卡一区二区三区 | 五月激情婷婷丁香 | 欧美1| 小小水蜜桃视频高清在线观看1 | 97色吧| 亚洲日本在线播放 | 国产在线观看香蕉视频 | 日韩精品无码一区二区免费A片 | 精品国产免费久久久久久 | 欧美一区二区三区高清视频 | 2020年国产精品 | 性爱视频免费 | 男污女XO猛烈的动态图 | 综综综综合网 | 日本在线网站 | 国产午夜免费视频片夜色 | 免费欧三a大片 | 欧美做人爱A毛片 | 日韩中文字幕在线播放 | 中文乱码一线二线三线 | 粗壮挺进邻居人妻无码 | 欧美激情黄色片 | 国产精品V无码A片在线看小说 | 古装一级无遮当一级毛片 | 久久草情侣vs| 国产精品人妻在线观看 | 亚洲欧美日韩高清一区二区三区 | 五月六月婷婷 | 国产99在线a视频 | 麻豆一姐视传媒短视频 | 99在线在线视频观看 | 日本午夜大片a在线观看 | 欧美性xxxx交 | 免费看国产精品麻豆 | 忘忧草社区WWW日本高清图片 | 亚洲三级黄色 | 么么哒电影大全免费观看 | 免费av网站 | 精品一区二区在线观看 | 强姧美女动态图片 | 国产精品色无码AV在线观看 | 无码色情一区二区在线看 | 丰满少妇内射一区 | 天堂资源在线8 | 另类网站 | 黄视频网站免费观看 | 女人下边被添全过程A片图片 | 欧洲无人区卡一卡二 | 少妇扒开粉嫩小泬视频 | 真实国产乱子伦精品一区二区三区 | 摸捏奶头动态图 | 亚洲精品成人无码A片在线 亚洲精品1卡2卡三卡4卡乱码 | 丁香六月深婷婷激情五月 | 亚洲精品第一页中文字幕 | 国产一区二区三区在线视频 | 免费三级黄色 | 日韩A片无码一区二区三区电影 | 亚洲精品久久蜜臀AV色欲 | h重口味小说 | 俺去也伦理片 | 丁香婷婷六月综合缴清 | 免费狼人久久香蕉网 | 欧美 亚洲 另类 综合网 | 久热久热| 久9视频这里只有精品试看 久草app黄 | 午夜日韩久久影院 | 久久受www免费人成_看片中文 | 一男一女做爰高潮A片韩剧 一女被多男灌满白浆受孕 一色屋免费精品视频 | 国产成人精品一区二区三区视频 | 美女1819xxxx| 国产高潮久久精品AV无码 | 亚洲 日韩 国产 制服 在线 | 国产91精品久久久久久久 | 亚洲欧美天堂网 | A片A三女人久久20247 | 黄色成人在线视频 | 深夜福利你懂的 | 国产片一级aaa毛片视频 | 国产高清不卡一区二区三区 | 开心四房播播 | 国产精品v欧美精品v日本精品动漫 | 免费观看成人久久网免费观看 | 中国ZLJZLJZLJZLJ精品 | 久久免费观看视频 | 狠狠色狠狠色综合日日92 | 黄色网址视频 | 亚洲情在线 | 国产麻豆精品乱码一区 | 日本一区二区在免费 | 欧美在线精品一区二区在线观看 | 国产美女无遮挡裸体毛片A片 | 高H各种PLAY全肉NP | 天书中文网 | 日韩h片在线观看 | 夜色贵族亚洲贴图区 | 久久久亚洲欧洲国产 | 91大神福利| 国产精品麻豆人妻精品A片 国产精品乱码一区二区三 国产精品乱码人妻一区二区三区 | 6080欧美一区二区三区四区 | 免费无码又爽又刺激A片小说 | 内射老阿姨1区2区3区4区 | 国产在线视频h | 甜性涩爱qvod| 1000部做羞羞事禁片免费视频网站 | 国产少妇人妻 在线播放 | 天天做天天射 | 五月天丁香激情 | 天天插夜夜操 | 日本免费在线观看视频 | 一级毛片人与动免费观看 | 国产精品av免费观看 | 国产 欧美 亚洲 日韩视频 | 夜夜噜2024最新| 国产亚洲情侣久久精品 | 一本色道久久88综合日韩精品 | 永久免费观看黄网站 | 斗破苍穹第5季全集免费观看 | 韩国和日本免费不卡在线V 韩国精品AV一区二区三区 | 边做边爱3电影 | 中文字幕在线观看你懂的 | 99美国热| 成熟妇女免费看A片视频 | 日韩a无v码在线播放免费 | va亚洲va日韩不卡在线观看 | 亚洲AV成人精品网站在线播放 | 给我一个可以免费看片的WWW | 国产精品视频一区国模私拍 | 日韩卡1卡2 卡三卡2021老狼 | 日韩AV片无码一区二区三区不卡 | 最近免费字幕中文大全视频 | 快播5.0.77精简版 | 一级人做人a爰免费视频 | 国产特黄又粗又硬A片 | 成人性大片免费观看网站YY | 国产亚洲精品久久久久久久软件 | 色丁香婷婷 | 国产无遮挡色视频免费观看性色 | 欧美又粗又硬又大久久久 | 借贷宝裸照 | hh99me福利毛片在线看 | 中文字幕乱码在线播放 | 吉泽眀步快播 | 97久久人人| 在线88av| 国产SUV精品一区二区88L | 国产亚洲va在线电影 | 亚洲精品国产不卡在线观看 | 精品人妻无码一区二区三区蜜桃一 | 最美白嫩的极品美女ASSPICS | 一级免费黄色毛片 | 一个人看免费视频www在线观看 | 久久久久久国产精品免费 | 五月婷婷欧美 | 国产乱国产乱老熟300部视频 | 人成乱码一卡二卡三四卡五卡六卡 | 老师我好爽再深一点办公室 | 99re在线视频精品 | 青草国产超碰人人添人人碱 | 亚洲 欧洲 日韩 综合色天使 | BL文库好大粗黑强强肉NP | 在教室伦流澡到高潮H吃奶小黄书 | 国产99精品一区二区三区免费 | 一级片免费在线观看 | 丁香六月激情 | 波多野结衣一区二区三区四区 | 国产激情视频在线 | 国产精品xxxav免费视频 | 欧美FREE性护士VIDE0SHD | 麻辣隔壁第一季 | 精品深夜AV无码一区二区老年 | 色欲国产麻豆一精品一AV一免费 | 在线播放黄色网址 | 天天涩综合 | 日干夜干天天干 | 亚洲另类激情专区小说 | 国产日韩欧美一区二区三区在线 | 欧美在线视频网 | 国内露脸少妇精品视频 | 免费女性裸身照无遮挡网站 | 欧美一道本一区二区三区 | 99热国产这里只有精品6 | 国产综合久久久久 | 国产精品久久久久久久久岛 | 香港三级日本三级韩国三级 | 亚洲欧美日韩另类精品一区二区三区 | 高清国产免费观看视频在线 | 激情又色又爽又黄的A片 | 免费的视频 | WWW日韩AV免费高清看 | 极品销魂一区二区三区 | 午夜男女爽爽羞羞影院在线观看 | 国产视频精品久久 | 宝贝把内衣脱了我想吃胸 | 激情五月综合婷婷 | 在线免费黄色网址 | 视频区 国产 图片区 小说区 | 日韩操| 中文天堂www资源 | 诱受H嗯啊巨肉舍友1V1 | 中文字幕在线网址 | 四虎紧急自动转跳在线视频 | 最近免费中文字幕大全免费 | 青青草在现线观看免费 | 欧美激情视频二区三区 | 无码日本精品一区二区三 | 玖欧美性生交XXXXX无码 | 秋霞网伦理片新网 | 九九视频在线观看视频 | 国产毛片欧美毛片久久久 | 免费高清欧美视频在线 | 国色天香精品一卡二卡三卡 | 一个色综合网 | 2020年精品国产午夜福利在线 | 欧美欲乱妇135 | 双乳被老汉玩弄A级毛片A片小说 | 久久婷婷无码欧美日韩 | 公交车上荫蒂添的好舒服口述小说 | 成人精品视频99在线观看免费 | 日本久久高清一区二区三区毛片 | 亚洲一区自拍高清亚洲精品 | 激情午夜婷婷 | 免费大片黄在线观看视频 | 最新国模无码国产在线视频 | 免费做爰猛烈吃奶摸视频在线观看 | 最新色网址 | 亚洲天堂最新网址 | 2022国产成人精品福利网站 | 婷婷在线视频国产综合 | 天美传媒在线观看 | 午夜精品久久久久久久第一页 | 日韩v欧美 | 色网址在线观看 | 91黄色大片| 波多野结衣一区二区三区四区 | 欧美日韩一道本 | 你懂的中文字幕 | 最新在线中文字幕 | 欧美亚洲日韩高清无码 | 日产乱码一卡二卡三免费 | 久久久国产99久久国产久 | 精品成人久久 | 91网在线 | 91九色视频在线观看 | 97人人干| 亚洲成AV人片一区二区三区 | 亚洲精品久久无码AV片俺去也 | 天天综合亚洲 | md色视频在线观看免费 | 久久国产亚洲电影天堂 | 成人丝袜射 | 在线成人免费观看国产精品 | 欧美一级久久久久久久大 | 高清av电影 | 97久久人人 | 久久精品这里 | 国产三级在线播放不卡 | 久久精品亚洲欧美日韩久久 | 国产九九视频在线观看 | 欧美三级经典免费播放 | 欧美又粗又大XXXX无码 | 最新福利网站 | 中国黄色在线观看 | 99热在线获取最新地址 | 亚洲桃色天堂网 | 久久国产高清字幕中文 | 搞av网| 国产国产成人精品久久 | 插老师进去了好大好舒服小说 | 午夜亚洲乱码伦小说区69堂 | 亚洲一区二区黄色 | 视频一区在线免费观看 | 亚洲AV无码一区二区A片成人 | 一个人在线视频免费观看www | 视频一区二区欧美日韩在线 | jizzyou欧美| 三个馊子伦着玩小说冫 | 日本黄页88网成品网站 | 在线视频久久只有精品 | 国产老肥熟xxxx | 国产在线高清不卡免费播放 | 91在线视频一区 | 九九精品视频在线观看 | 成 人 a v黄 色 | 看看的在线视频国产 | 91最新网站免费 | 欧美精品XXXXBBBB | 舌头伸进去添的我好爽高潮视频 | 日本妇人成熟A片高潮小说 日本高清免费观看高清电影 | 精品国产高清毛片A片看 | 欧美日韩乱妇高清免费 | 日韩在线aⅴ免费视频 | 日本乱码一卡二卡三卡永久 | 卡1卡2卡3精品推荐老狼 | 91精品乱码一区二区三区 | 四虎精品成人影院在线观看 | 欧洲成人免费高清视频 | 日本特黄群交A片视频 | 欧美日韩免费一区高清 | 免费看一毛一级毛片视频 | 国产亚洲女人久久久久久 | 国产AV国片偷人妻麻豆 | 黄色网页在线免费观看 | 秋霞最新高清无码鲁丝片 | 年轻的朋友6 免费观看 | 人妻熟妇乱又伦精品视频中文字幕 | 日本精高清区一 | 日日夜夜伊人 | 在线观看黄页网站 | 另类重口100页在线播放 | 短篇H爽文小说集大全 | 亚洲AV色情偷拍精品 | 99热这里只就有精品22 | 狠狠色丁香婷婷久久综合考虑 | 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 | 成人网在线 | 色婷婷国产| 永久免费观看国产裸体美女 | 丁香花视频资源在线观看 | 中文字幕首页 | 亚洲自偷自拍另类图片二区 | 在线欧美中文字幕农村电影 | 天美传媒新剧国产剧影视公司 | 精品偷拍在线一区二区 | 男人舔女人的阴部黄色骚虎视频 | 日日摸夜夜添夜夜添亚洲女人 | 天堂а√中文最新版地址 | 免费精品美女久久久久久久久 | 黄网址大全免费观看免费 | 超碰老师97zyz资源总站 | 亚洲视频一 | 亚洲国模私拍人体gogo | 色婷婷激情五月综合 | 国产乱论 | 日日lu| 国产麻豆精品乱码一区 | 性XXXX18精品A片一区二区 | 国产福利你懂的 | 日本少妇内射视频播放舔 | 无限看片的免费视频动漫 | 黄页网站在线观看视频 | 少妇人妻人伦A片 | 疯狂伦交1一6 小说 疯狂揉小泬到失禁高潮在线 | 欧洲不卡一卡2卡三卡4卡网站 | 国产亚洲精品成人久久网站 | 午夜不卡久久精品无码免费 | 双性受高H公车地铁公交 | 2018天堂网 | 久久久日韩成人精品电影 | 一区二区三区国产亚洲网站 | 三a毛片 | 国产午夜亚洲精品一区 | 免费看少妇高潮A片特黄 | 视频黄页在线观看 | 一区二区亚洲精品国产精华液 | 成人免费影院 | 日本在线视频一区 | 午夜A理论片在线播放 | 欧美成年黄网站色视频 | 欧美日韩精品一区二区免费看 | 中国chinese国产高清 | 国产精品久久久久久久网站 | 国产精品美女久久久网站动漫 | 久久成人国产精品免费软件 | 日韩精品一区二区三区免费视频 | 久久精品最新免费国产成人 | 国内精品久久久久尤物 | 精品伊人久久大线蕉色首页 | 国产高清不卡一区二区三区 | 亚洲成综合人影院在院播放 | 99ri精品| 国产永不无码精品AV永久 | 成人h视频 | 九色97 | 国产真实乱系列 | 色就色 综合偷拍区 | www.蜜臀| 欧美又大又长又粗又爽A片 欧美综合图区亚洲综合图区69 | 日本女人下面毛茸茸 | 秋霞2018秋霞网理伦片 | 国产成人综合亚洲亚洲欧美 | 边做边爱完整版免费视频播放视频 | 中文字幕不卡在线播放 | 中文字幕精品无码一区二区 | 三色黄A片免费播放335VCC | 四房播播看| 免费在线黄网站 | 亚洲 欧美 变态 卡通 自拍 | 吃奶边摸叫床刺激A片视频 抽插内射高潮呻吟爆乳 | 狠狠色丁香婷婷 | you jiz com亚洲 | 国产精品边做奶水狂喷小说 | 日本巨乳亚洲高清 | 久久发布国产伦子伦精品 | 女人一级毛片免费观看 | 亚洲一区免费视频 | 免费永久在线观看黄网 | 亚洲中字慕日产2024 | 另类视频色综合 | 久久精品伊人波多野结 | 日韩一区二区三区不卡 | 亚洲偷怕 | 日韩精品一区二区亚洲AV观看 | 国产精品流白浆在线观看 | 日本三级在免费2017 | 麻豆国产AV尤物网站尤物 | 国产成人在线精品 | 波多野结衣中文字幕一区 | 韩国高清大片免费观看在线第9集 | 天美传媒影视app最新版下载 | 国产一区二区三区在线视频 | 99这里视频只精品2024 | 国产在线视频h | 人妻丰满精品一区二区A片 人妻换人妻AA视频 人妻激情综合久久久久蜜桃 | 窝窝午夜剧场 | 99热视| 麻豆传煤官网入口免费进入 | 日本高清视频在线的 | 女人18毛片水真多免费播放 | 久久精品爱国产免费久久 | 久久亚洲精品高潮综合色A片 | 中文字幕人乱码中文 | 欧美宗合网 | 欧美亚洲蜜桃成熟 | 国产福利一区二区三区在线观看 | 国产精品看高国产精品不卡 | 狠狠撸影视 | 日韩亚洲欧美中文高清 | 国产成人AV激情在线播放 | 国产亚洲精品久久7777777 | 日本老女人 | 黑人巨大进入白人美女视频 | 婷婷激情综合色五月久久 | 四虎影视8848a四虎在线播放 | 精品无码一区二区三区不卡 | 免费播放大片免费观看视频 | 越猛烈欧美xx00动态图免费 | 天天狠狠弄夜夜狠狠躁·太爽了 | 在线日韩中文字幕 | 草草在线视频 | 中文字幕欧美日韩久久 | 精品国产乱码久久久久久免费 | 女同桌张开腿让我爽了一夜 | 丰满人爽人妻A片二区 | 中国一级免费毛片 | 欧美激情啪啪 | 97久久精品无码一区二区欧美人 | 久久久A片精品一区二区 | 四虎8848精品永久在线观看 | 手机播放一卡二卡三在线观看 | 日本中文字幕不卡 | 成年人免费黄色片 | 日韩美女视频在线观看 | 久热精品视频在线播放 | 日本ZLJZLJZLJZLJ669 | 国产欧美日韩精品二区 | 风雨送春归免费观看 | 懂色AV| 色网视频在线观看 | 欧美色阁 | 免费精品国产日韩热久久 | 91网站免费在线观看 | 97碰碰碰免费公开在线视频 | 九九视频精品36线视频在线观看 | avtt天堂东京热一道本 | 国产精品久久福利网站app | 浪荡受自我调教纯肉BL | 色哟哟在线网站 | 中文字幕电影乱码在线观看 | 成人片AV | 国产成人亚洲精品91专区高清 | 成人性生交A片免费观看 | 亚洲一区在线播放 | 天天夜天天干 | 精品人妻无码一区二区三区手机板 | 国产成人在线精品 | 日韩精品免费观看 | 国内精品人妻无码久久久影院蜜桃 | 午夜亚洲国产理论片二级港台二级 | 在线a级| 大学生一级毛片 | 国产色情乱码久久久久一区二区 | 亚洲欧美日本久久综合网站 | 精品国产一区二区三区四区在线看 | 涩涩片大全百度影音 | 国产成人午夜性a一级毛片 国产成人午夜福在线观看 国产成人无精品久久久久国语 | 韩国三级在线高速影院 | 玖玖精品在线 | 在线亚洲精品国产一区麻豆 | XX色综合| 97在线视频免费人妻 | 国产ts精品人妖系列 | 国产精品天天影视久久综合网 | 亚洲综合干 | 嗯好湿用力的啊c进来动态图 | 国产春色 | 一本久道久久综合久久鬼色 | 3d人肉蒲团之极乐 | 波多野结衣在线免费播放 | 91色桃| 免费观看又色又爽又黄的忠诚 | 色四房 | 久草手机在线视频 | 久久精品视频在线直播6 | 国产一级毛片大陆 | 99久久免费精品国产免费高清 | 日本啊啊视频 | 麻豆久久婷婷综合五月国产 | 中文国产成人精品久久app | 欧美激情一区二区三区 | 色偷偷国色天香在线观看免费视频 | 久久国产免费观看精品A片 久久国产免费观看精品1 | 少妇P毛又多又黑A片免费 | 国产免费看插插插视频 | 中文字幕无线观看在 | 波多野结衣在线观看一区 | 四虎在线影视 | 9I看片成人免费 | 琪琪电影福利网2017 | 国产传媒18精品A片在线观看 | 精品一区二区三区的国产在线观看 | 最近高清中文在线字幕在线观看1 | 亚洲资源在线播放 | 国产黄色片在线播放 | 日韩精品区 | 一本大道熟女人妻中文字幕在线 | 婷婷综合在线 | 我要看电影 | 中文区中文字幕免费看 | 乳奴调教H产乳涨揉产奶调教A片 | 劲爆欧美精品13页 | 荡公乱妇第1章方情95视频 | 无码日韩人妻精品久久蜜桃免费 | 深爱五月激情五月 | 无码人妻一区二区三区A片 无码任你躁久久久久久久 无码日本电影一区二区网站 | 麻豆传煤网站免费入口ios | 国产精品污WWW在线观看 | 色爱区综合激情五月综合色 | 成人性视频在线三级 | 东京一本一道一二三区 | 日本中文字幕乱码免费 | 亚洲欧美中文日韩二区一区 | 真人三十六式春交图 | 午夜视频在线观看区二区 | 波野多结衣在线 | 色视频亚洲 | 国产情侣作爱视频免费观看 | 美女扒开下面让男生桶白浆 | 婷婷亚洲图片 | 精品无码国产AV一区二区三区 | 日韩精品永久免费播放平台 | 日本a级片免费 | 国产人妻精品久久久久久很牛 | 影视AV久久久噜噜噜噜噜三级 | 美欧毛片 | 亚洲色图欧美激情 | 国产日韩精品一区二区三区在线 | 小小视频资源免费观看高清 | 欧美日韩亚洲综合2019 | 小骚货 爽不爽 | 91精品国产一区 | 久久这里只有是精品23 | 99精品免费 | 无码免费人妻A片AAA毛片一区 | 精品亚洲国产成人A片在线观看 | 亚洲精品一区二区绿巨人 | 国产麻豆乱子伦午夜视频观看 | 最近免费高清版电影在线观看 | 国产成人爱片免费观看视频 | 麻豆精品久久久一区二区 | 琪琪午夜伦伦A片 | 九色综合亚洲色综合网 | 性一乱一交一A片.看A片 | 国产成人精品日本亚洲18图 | 国产专区在线 | 亚洲精品中文字幕乱码影院 | 欧美另类专区 | 精品无码日本蜜桃麻豆走秀 | bt天堂网.www在线资源 | 国产精品美女乱子伦高潮 | 91视频不卡| 国产AV人人妻人人爽 | 成人污片 | 毛片小说 | 高清电影在线观看 | 日本无码一区二区二区 |