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

moda

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

agskipci

13 Oct 2025(atualizado 13/10/2025 às 02h51)

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

Temas

Compartilhe

BBCcom_Content_Index_for_August_11_2019.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 zynga poker hack apk downloadits 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

BBCcom_Content_Index_for_August_1_2017.txt explorar e os abrangente conhecimento.

GRáFICOS

nos eixos

Zoos_and_Zoology_-_BBC_News.txt

BBCcom_Content_Index_for_August_17_2021.txt enciclopédia e os explorar conhecimento.

Navegue por temas

BBCcom_Content_Index_for_August_17_2023.txt BBCcom_Content_Index_for_August_17_2022.txt BBCcom_Content_Index_for_August_20_2019.txt BBCcom_Content_Index_for_August_14_2021.txt BBCcom_Content_Index_for_August_13_2018.txt BBCcom_Content_Index_for_August_20_2025.txt BBCcom_Content_Index_for_August_21_2017.txt BBCcom_Content_Index_for_August_21_2020.txt BBCcom_Content_Index_for_August_13_2025.txt BBCcom_Content_Index_for_August_19_2021.txt
亚洲无AV在线中文字幕 | 2022最新a精品视频在线观看 | 汗だく爆乳中出しプレスめぐり | 一级毛片美国一级j毛片不卡 | 最新更新国内自拍视频 | 美美哒免费高清影院在线观看8 | 亚洲a视频在线 | 毛片免费毛片一级jjj毛片 | 骚妇的水真多让我插她 | 四房开心网 | 2019最新久久久视频精品 | 亚洲成人国产精品 | 最近中文字幕在线资源 | 国产熟睡乱子伦视频在线播放 | 成人毛片免费网站 | 污污的网站免费在线观看 | 又硬又粗进去好爽A片66 | 波多野吉衣 免费一区 | 久久综合九色综合97手机观看 | 免费不卡毛片 | 在线免费观看毛片网站 | 久久五月色婷婷丁香六月综优物 | 毛茸茸熟女 | 97sese图片| 9191在线| 久久久视频2019 | 香蕉乱码成人久久天堂爱免费 | a级毛片高清免费视频 | xxxx日本免费高清视频 | 亚洲三级成人 | 簧片电影大全网站 | 久久久GOGO无码啪啪艺术 | 成人午夜毛片 | 夜夜躁狠狠躁日日躁视频 | 香港三级日本三级人妇网站 | 亚洲精品色情APP在线下载观看 | 免费色站 | 最新国产三级 | 婷婷97狠狠成人网站 | 高考陪读妇乱子伦小说长篇 | 久操这里只有精品 | 久久久国产免费影院 | 在线观看国产亚洲视频免费 | jizz性欧美2| 色综合久久五月 | 亚洲va高清中文字幕 | 免费夫妻生活片AV | 久久精品国产福利国产秒 | 国产成人亚洲精品影院 | 91免费永久国产在线观看 | 午夜人妻熟女一区二区 | 直接看的成人无码视频网站 | 特级淫片国产免费高清视频 | 国产国语一级毛片 | 久久国产精品国语对白 | 亚洲成年人免费网站 | 国产午夜理论片YY8840Y | 国产AV无码国产AV毛片 | 94色94色永久网站 | 在线不卡日本v二区到六区 在线岛国片免费观看无码 在线高清无码欧美久章草 在线观看 有码 制服 中文 | 免费国产直接看片av | 久久精品国产亚洲AV影院 | 亚洲一卡2卡3卡4卡乱码网站 | 成年女人18级毛片毛片免费观看 | 97夜夜澡人人爽人人模人人喊 | 麻豆影视国产TV在线观看 | 日韩美女视频在线观看 | 国产精品精华液网站 | 日韩精品久久久毛片一区二区 | 亚洲成色A片202477在线小说 | 色播视频网站 | 一级片中文字幕 | 国产精品第1页在线播放 | 高清不卡伦理电影在线观看 | 人妻 小说| 久久精品这里是免费国产 | 丁香婷婷六月综合交清 | 国产黄A片免费网站免费 | 欧美另类专区 | 国内精品久久久久久 | 国产ts在线观看 | 开心色播网 | 国产精品国产成人国产三级 | 天美传媒新剧国产资源 | 请以你的名字呼唤我 | 家庭教师波多野结衣在线观看 | 亚洲精品高清AV在线播放 | 丰满女邻居做爰BD | 毛片无码免费无码播放 | 麻豆影视国产TV在线观看 | 波多野结衣免费在线视频 | 福利精品一区 | 国产色情AAA级AAA电影 | 丁香五月综合缴情月 | 越猛烈欧美xx00动态图免费 | 樱花草视频在线观看社区WWW | 美女视频一区二区三区 | 日本一区视频 | 午夜深夜福利网址 | 成人在线你懂的 | 国产成人综合精品一区 | 日本免费一区二区三区视频 | swag精品| 坐在校草身上摩擦H | 亚洲成成品网站源码中国有限 | 国产精品久久久久久久福利院 | 日韩精品你懂的在线播放 | 91香蕉视频在线播放 | 性吧有你cc | 日本 韩国 三级 国产 欧美 | 麻婆豆传媒一区二区三区 | 免费播放一区二区三区 | 午夜西瓜视频在线观看 | 美女扒开腿让男人桶爽APP免费看 | 亚洲AV久久无码精品九九九小说 | 国产欧美日韩网站 | 中文字幕欧美视频 | 九九九国产 | 国产AV国片精品一区二区 | 久久久免费看少妇高潮A片特黄 | 四虎影视国产在线观看精品 | 亚洲精品无码一区二区三区仓井松 | 欧类av怡春院 | 求av网址| 亚洲欧美国产成人综合不卡 | 狠狠色狠狠色综合日日92 | 免费看成人播放毛片 | 欧美又粗又长又爽做受 | 国产内射大片99 | 成人国产激情福利久久精品 | 久99久精品免费视频热77 | 水中色av综合 | 少妇少妇做爰片AA | 国产视频网 | 国产真实乱子伦新视频 | 黄黄网 | 婷婷激情综合色五月久久 | 一区二区三区视频在线观看 | 欧美日韩视频二区三区 | 欧美日韩亚洲一区二区三区在线观看 | 日本精品一区二区在线播放 | 中文字幕人成乱码熟女APP | 中文有码人妻字幕在线 | 国产色精品久久人妻无码看片软件 | 四虎永久在线精品国产免费 | 日韩精品视频福利资源站 | 免费超级淫片日本高清视频 | 无码人妻丰满熟妇啪啪网不卡 | 酒色成人| 久污tv| 国产午夜精品理论片 | 粉嫩AV久久一区二区三区王玥 | 全身无赤裸裸美女 | 中文字幕一区二区视频 | 成人麻豆日韩在无码视频 | 成人做爰片免费网站 | 久久国产精品一区 | 天天插天天干天天射 | 内射爆草久久爱 | 国产一区二区久久A片免费 国产一区二区三不卡高清 国产一区二区三区A片在表 | 久久草视频这里只精品免费 | 色综合久久久久 | 黄色成人在线播放 | 天天综合天天看夜夜添狠狠玩 | 日本一区二三区好的精华液 | 快穿之情欲尺度H | 永久免费观看的黄网站 | 师尊禁脔被迫含精入睡H | 亚洲精品偷拍AV一区二区 | 亚洲 无码 在线 专区 | 国产成人久久精品推最新 | 中文字幕一区二区三 | 国产SUV精品一区二区五 | 亚洲日本中文字幕区 | 三级毛片在线免费观看 | 性欧美极品 | 天天添| 校草上课时狂揉我下面 | 波多野结衣久久国产精品 | 激情网址大全 | 亚洲极美女高清视频 | 亚洲欧美中文日韩在线v日本 | 青青热久免费精品视频在首页 | 久久久久久久国产精品视频 | 国产人妻丰满熟妇嗷嗷叫 | 天使影院| 99精品免费观看 | www狠狠干| 草草影院在线观看 | 国精视频一区二区视频 | 日韩免费高清一级毛片 | 色情A片成人网站免费看视频 | 亚洲热久久 | 日韩女同视频 | 国产在线一二三区 | 抖音成长人版短视频安装 | 久久久久久a亚洲欧洲aⅴ | 国产亚洲精品久久久无码网站 | 看黄色免费网站 | 大学生高清一级毛片免费 | 美女视频黄的全是免费 | 色综合一区二区三区 | 蜜桃999.com| 国产成人精品高清在线观看99 | 小说H全肉一对一 | 2k电影网| 国产精品自在在线午夜蜜芽tv在线 | 免费视频不卡一区二区三区 | 成人乱码一区二区三区AV66 | 国产精品人妻无码久久久2024 | 久久久这里只有精品免费 | 99国产精品热久久久久久 | A片粗大的内捧猛烈进出AV | 校园黄乱色伦短篇小说 | 狠狠干老司机 | h污小舞白丝玉足榨精小说 h重口味小说 | 麻豆文化传媒精品 | 2018一级毛片免费观看 | japanese大战黑人 | 欧美激情精品久久久久久大尺度 | 日本卡二卡三卡免国色 | 国产三级三级三级三级 | 性欧美VIDEOFREE高清精品 | 深爱五月综合网 | 国产精品久久国产精品99 | 国产精品久久久久久久久久免费 | 少妇和黑人老外做爰 | 国产精品 同事 在线 视频 | 麻豆MD传媒MD0049入口 | 97丨九色丨国产人妻熟女 | 高辣H小黄文 | 少妇人妻真实偷人精品视频 | 欧美h片在线 | 国产精品综合色区 | 最大胆裸体人体牲交666 | 啊灬啊别停灬用力啊A片 | 天天综合天天做 | 免费久久久久 | 公交车艳妇系列1一40 | 麻豆自制传媒 国产之光黄 麻豆在视频线 | 福利视频在线播放 | 毛片资源站 | 最新发布页ccyycom草草影院 | 亚洲一级视频在线观看 | AV性色AV久久无码AI换脸 | WWW.一本色道88久久爱 | 亚洲国色天香卡2卡3卡4 | 性夜影院午夜看片 | 九月婷婷人人澡人人爽人人爱 | 久久99国产一区二区三区 | 四虎影视1304t | 亚洲区激情区图片小说区 | 国产精品V无码A片在线看小说 | 老师好大乳好紧好深动态图 | 天堂8中文在线最新版在线 天堂8在线天堂资源在线 | 欧美黑人猛性暴交 | 伦理电影网百度影音 | 亚州巨乳成人片 | 亚洲欧美国产精品久久久 | 最好看的韩国日本在线观看 | 在线播放免费看高清大片 | 久久久久女人精品毛片九一 | 日韩国产在线播放 | 日本A片特黄久久免费观看 日本A片中文字幕精华液 | 多波野结衣在线观看 | 亚洲 欧美 日韩在线一区 | 视频一区国产在线第一页 | 亚洲午夜影视 | 五月丁香缴情深爱五月天 | 国产精品亚洲精品久久精品 | 无人在线观看视频高清视频 | 亚洲区中文字幕 | 日本视频在线免费 | 亚洲v天堂v手机在线 | 精品乱码一卡2卡三卡4卡网 | 丁香五月亚洲中文字幕 | 欧美日本韩国一二区视频 | 国自产拍偷拍精品啪啪AV | 中文在线三级中文字幕 | 台湾一级毛片永久免费 | 全肉的色情小說 | 成年女人免费观看视频 | 久久久亚洲欧洲国产 | 久久久国产精品免费 | 永久免费av网站 | 欧美中文字幕在线 | 免费国产黄网站在线观看动图 | 日韩精品AV一二三区在线 | 五级黄色片 | 欧美激情 亚洲 在线 | 在教室伦流澡到高潮H吃奶小黄书 | 亚洲免费国产在线日韩 | 嫩草欧美曰韩国产大片 | 最近更新2019中文字幕免费 | 日日碰狠狠躁久久躁7777 | 全身无赤裸裸美女 | 日韩国产人妻一区二区三区 | 国产一及毛片 | JLZZJLZZ日本人护士水好多 | 自拍 偷拍 亚洲 欧美 另类 | 夫妻性姿势真人做视频 | 免费影院| 色婷婷综合欧美成人 | 国产精品人妻一区夜夜爱 | 国产亚洲福利在线视频 | 国产成人理在线观看视频 | 成人性视频在线三级 | 国产亲妺妺乱的性视频播放 | 日本一区二区三区免费播放视频站 | 国产一级做a爱片久久毛片a | 日本免费中文字幕 | 国精产品一二三线999 | 日本强好片久久久久久AAA | 日韩精品欧美高清区 | 日韩精品视频美在线精品视频 | 日韩在线视频www色 日韩在线免费观看视频 | 2022国产成人精彩在线视频 | 巜疯狂的少妇4做爰HD | 在线观看国产精选免费 | 国产精品无卡无在线播放 | 国产成人精品男人免费 | 国精产品一二二区视早餐有限公司 | 中文字幕 无码亚洲 | 在线视频日本 | 一区二区无码精品AV | 久久精品少妇高潮A片免费观 | 欧美一区二区三区免费 | 婷婷夜夜躁天天躁人人躁 | 欧洲成人免费高清视频 | 色翁荡熄又大又硬又粗又视频图片 | 精品无码国产污污污免费网站2 | 国产成+人+综合+亚洲专 | 波多野结衣家教老师 | 色噜噜综合熟女人妻一区 | 日韩亚洲欧美中文在线 | 午夜时刻免费入口 | 国产精品扒开腿做爽爽青涩情侣 | 黄色软件草莓丝瓜秋葵安卓下载破解版大全 | 777爽死你无码一区二区 | 国产无线乱码一区二三区 | 中文字幕日本久久2019 | A片好大好紧好爽视频免费 A片女女女女女女BBBB | 四虎影午夜成年免费精品 | 自拍 偷拍 亚洲 欧美 另类 | 国产精品三级在线观看 | 五月天婷婷激情视频 | 在线观看免费a∨网站 | 国产亚洲精品第一区香蕉 | 色多多APP福引导入口 | 日本一区二区三区欧美在线观看 | 色播视频在线观看 | 韩国A级做爰片无码费看蚯蚓 | 五色网 | 在线最新av免费费观看 | 亚洲第6页 | 亚洲成年网站 | 性欧美video另类hd亚洲人 | 国产精品久久人妻拍拍水牛影视 | 听党话跟党走始终是共青团坚守的 | 99国产精品人妻无码免费 | 色综合成人丁香 | 日韩欧美视频一区二区三区 | 久久频这里精品99香蕉久网址 | 久久久久久久999 | 免费无码又爽又刺激A片软软件 | 久久天天躁日日躁狠狠躁 | 亚洲国产品综合人成综合网站 | 久操免费视频 | 公和我做爽死我了A片口述 公交车上无耻挖阴 | 日本内射精品一区二区视频 | 亚洲爱爱网 | 波多野结衣久久精品免费播放 | 黄色在线看网站 | 国产高清亚洲精品26u | 欧美jav| 一级毛片两人添下面 | 精品人妻少妇一区偷拍视频 | 九色综合久久综合欧美97 | 伦理片在线线手机版韩国免费观看 | 免费人欧美成又黄又爽的视频 | 大地影院日本韩国电影免费观看 | 五月天丁香色 | 色网站在线观看 | 簧色女人bi图片大全 | 欧美在线亚洲 | 黄色免费网址大全 | 国产精品手机在线播放 | 自拍 亚洲 偷拍 青涩 | 久青草国产在视频在线观看 | 人人香蕉 | 91精品一区二区三区在线播放 | 波多野结衣 美乳人妻 | 婷婷色亚洲 | 亚洲ass| 久久成人18免费网站 | 日本正能量不良网站 | 亚洲精品一区二区三区福利 | 国产呦精品一区二区三区下载 | 国产伦精品一区二区免费 | 黄篇网站在线观看 | 国产午夜精品一区理论片飘花 | 好看的网站 你懂的 | 天天色天天综合 | 日韩欧美视频一区二区 | 无码乱人伦一区二区亚洲 | 久久国产精品99久久小说 | 午夜福利电影网站鲁片大全 | 最近更新中文字幕 | WWW九色在线COM| 人人干视频在线观看 | 亚洲国产高清精品线久久 | 国产精品久久久久久久久免费观看 | 久久综合九色综合97 | 粗大的内捧猛烈进出少妇在线播放 | 日韩亚洲欧美在线 | 免费无码一区二区三区A片蜜臀 | 少妇真人直播免费视频 | 日本久久高清一区二区三区毛片 | 亚洲国产精品日本无码小说 | 最好看的韩国日本在线观看 | 天堂va | www视频免费在线观看 | 精品无码国产自产野外拍在线 | 日日爱669| 51人人看电影| www成人在线观看 | 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 | 欧美日韩精品一区二区三区视频 | 伊人手机在线视频 | 一级做a爱过程免费视 | 香港三级日本三级三级韩级2 | 免费无遮挡无码H肉日本动漫 | 日韩欧美高清一区 | 2021国产成人综合亚洲精品 | a国产视频 | 快播官网首页 | 91福利国产在线观一区二区 | 97se亚洲综合自在线尤物 | 亚洲成AV人片在线观看WV | 色情无码视频7788 | 羞羞答答.NT视频在线观看 | 日本一卡二卡三卡四卡无卡免费播放 | 亚洲精品无码成人A片九色播放 | 日本无码免费一区二区不卡的视频 | 真人作爱视频免费网站 | 黄色一级视频在线播放 | 日韩精品一区二区三区在线观看 | 日本大片高清免费视频日本 | 亚洲AV久久久久久久无码 | 欧美性猛交99久久久久99 | 欧美精品在线观看 | 麻豆精品国产精华液好用吗 | 日本MV高清在线成人高清 | 欧美亚洲日韩国产在线在线 | 国产三级在线免费 | 日韩三级 | 亚洲精品久久一区二区三区四区 | 亚洲成 人图片综合网 | 国产在线欧美日韩一区二区 | 日本少妇A片又爽又黄 | 班长坐在我的腿上娇喘 | 亚洲成人在线免费观看 | 99精品国自产在线偷拍无码软件 | 久久人人澡 | 雯雅婷4去码截图 | 天堂网在线观看视频 | 欧美性动态图 | av天堂.com| 国产在线不卡 | 亚洲伊人色综合网站 | 男女午夜精华液 | 色鬼网站 | 亚洲丰满熟妇XXXX性A片 | 九九视频在线观看视频6 | 亚洲精品一区国产欧美 | 国语自产拍在线观看偷拍 | 国产亚洲精品在浅麻豆 | 亚洲AV综合AV国产AV | 无码潮喷A片无码高潮软件 无码潮喷A片无码高潮小说 | 亚洲日本高清 | 黑人干日本美女 | A卡一卡二乱码新区免费 | 性色做爰片在线观看WW | 激情六月色 | 欧美日本韩国亚洲 | 麻辣妈妈| 99热在线观看精品 | 美女视频黄a视频全免费网站色窝 | 日本成年奭片免费观看 | 日本视频免费观看 | 伦理电影播放伦理电影 | 91福利视频免费观看 | 99久久精品费精品国产 | xx顶级欧美熟妞xxhd | 色555| 四虎最近网站是多少 | 高清无码中文字幕影片 | 日韩插啊免费视频在线观看 | 大山里真实刮伦小说 | 国产又色又爽又免费的刺激软件 | 女人18毛毛片兔费码A片 | 亚洲欧美一区二区成人片色欲AV | 全肉高H短篇合集 | 亚洲国产在线精品国自产拍五月 | 久久九九少妇免费看A片 | 一个人在线观看的免费视频www | 性欧美精品videofree高清hd | 影音先锋 av天堂 | 高清在线精品一区二区 | 日韩福利片午夜在线观看资源 | 精品国产乱码久久久软件下载 | 啪啪免费视频在线观看 | 九九免费视频 | 久久婷婷五月综合色丁香花 | 麻豆传媒新剧国产30部 | 天堂网2014 | 日本一卡二卡3卡四卡无卡国色天香网入义站 | 亚洲 欧美 视频 手机在线 | 女人18毛片水真多免费播放 | 日本免费一区二区三区视频 | 日产精品乱码卡一卡2卡三 日产精品卡二卡三卡四卡乱码视频 | 婷婷视频网| 无限免费动漫看片的视频 | 久久精品国产视频在热 | 欧美性猛片AAAAAAA | 99ri在线精品视频 | 2020最新国产自产精品 | 最新videos哆啪啪 | 久久久精品国产 | 欧美做受 | 九操网 | 999国产精华是正规产品吗 | 亚洲综合激情小说 | 97人人添人人澡人人澡人人澡 | 啊灬啊别停灬用力啊动态图 | 黄色网络在线观看 | 欧美国产亚洲一区二区三区 | 国产精品久久久AV久久久 | 日韩欧美在线一区二区三区 | 99视频精品全部免费 在线 | 韩国日本香港三级 | 女人露p毛的图片 | 久草在线在线精品观看 | 中文字幕人妻A片免费看 | 快播泷泽萝拉 | 波多野结衣一区二区三区 | 国产免费黄色网址 | FREE性开放小少妇 | 中文字幕免费视频 | 欧美经典人人爽人人爽人人片 | 日韩精品一区二区三区在线观看 | 日本精品无码久久久久三级国产 | 国产亚洲精品久久久久久白晶晶 | 国产不卡在线视频 | 综合激情六月 | 美国无人区| 日本不卡高清 | 噜噜噜噜私人影院av线观看 | 蜜桃麻豆WWW久久国产人妻 | 日本无码一区二区三区不卡毛片 | 巨乳波霸在线中文字幕 | 欧美 亚洲 中文 国产 综合 | 欧美性video老少配 | 色站在线 | 中文字幕在线综合 | 国产又爽又大又黄A片另类 国产又爽又大又黄A片软件 | 免费一级黄色片 | 国产丰满老熟妇乱XXX | 亚洲国产成人久久 | 国产激情在线视频 | 大片免免费观看视频播放器在线观看 | 九九精品视频在线观看九九 | 午夜免费大片 | 日韩性做爰免费A片AA片 | 强硬进入岳A片69色欲VA | 男男双性高H浪荡小说合集 男男体育生乱yin高H肉汁 | 正在播放重口老熟女露脸 | 欧美一区二区三区精品影视 | 国产三级欧美 | 久久99精品久久久久久噜噜丰满 | 色福利网 | 久久黄色录像 | 日韩A片中文字幕视频免费 日韩MV欧美MV中文无码 | 亚洲一卡2卡三卡4卡 127 | www.干| 国产h视频在线观看免费 | 伊人久久五月天 | 国产AA久久大片日本无码 | 亚洲精品国产一区二区三 | 亚洲 自拍 偷拍 另类综合图区 | 中国一级免费毛片 | 免费男人的加油站app下载 | 在线欧美日韩制服国产 | 免费一级a毛片在线 | 国产99精品一区二区三区免费 | 中文字乱码区2021 | 制服丝袜中文字幕在线 | 黄色网址在线播放 | 免费v片| 在线看免费观看AV深夜影院 | 国产精品久久久久久久久免费hd | 午夜私人影院 | 久久成年片色大黄全免费网站 | 久久高清免费视频 | 少妇被躁爽到高潮无码麻豆AV | 国精产品69永久中国有限 | 波多野结衣一区2区3区 | 亚洲成a人v欧美综合天堂下载 | 精品日韩在线 | 亚洲高清免费在线观看 | 国产不卡高清在线观看视频 | 丝瓜app下载网址进入安卓免费 | 久久婷婷五月综合色精品首页 | 五月天精品视频在线观看 | 色情A片激情无码色情 | 嫩草国产福利视频一区二区 | 伦理电影中文字幕韩国在线观看 | 国产欧美成人一区二区A片 国产女人乱人伦精品一区二区 | 最近中文字幕MV在线视频看 | 国产综合91天堂亚洲国产 | 成人福利网 | 最新精品亚洲成a人在线观看 | 青青草国产v片 | 日本三级韩国三级香港三级网站 | 成年网站在线 | 日本精品无码一区二区三区久久久 | 黄到下面流水的爽文很污的情话 | 人人欧美 | 国语熟妇乱人乱A片久久 | 被绑在坐桩机上抹春药 | 欧美精品一区二区三区四区 | 果冻传媒和91制片厂网站软件 | 精品视频中文字幕 | 日本AAA片爽快视频 日本A片把舌头伸进粉嫩视频 | 四虎 影院 免费 | 四库影院884TT永久地址 | 一级片免费在线观看 | 精品欧美亚洲韩国日本久久 | 应韩国伦理片 | 久久精品亚洲日本波多野结衣 | 日本巨乳亚洲高清 | 激情销魂乳妇奶水小说 | u影快播 | 一级视频在线观看完整版 | 久草草在线视视频 | 永久国产 | 久久无码人妻中文国产 | 国产欧美精品一区二区三区-老狼 | 欧美精品久久久久久无码人妻 | 福利姬视频在线观看 | 国产精品福利尤物youwu | 久久免费国产 | 少妇做爰特黄A片免费看 | 99视频免费观看 | 国产性生大片免费观看性 | 中文人妻熟女波多野结衣 | 国产又黄又爽又色视频免费软件 | 五月香六月婷婷激情综合 | 国产成人精品日本亚洲18图 | 91福利免费视频 | 日韩三级中文字幕 | 自拍中文字幕 | 免费看黄网站在线看 | 老太奶性BBWBBW在线观看 | 草莓视频app深夜福利 | 熟女人妻久久中文字幕一二区 | 久久中文字幕无码A片不卡古代 | 欧美人妖16p| 欧洲一卡2卡3卡4卡乱码视频 | 亚洲综合在线播放 | 成人乱码一区二区三区A片 成人乱人乱一区二区三区 成人区人妻精品一区二欧美毛片 | 免播放器无码av网址 | 天堂网www在线中文天堂 | 中文在线三级中文字幕 | 蜜芽国精产品一二三产区 | 成人18网址在线观看 | 什么网站可以看毛片 | 日本在线视频免费观看 | 天堂网在线最新版官网 | 好好的曰com久久 | 精品午夜国产福利观看 | 最近中文字幕免费完整 | 久久影院一区 | 亚洲青草视频 | 拍裸戏时被C了H辣文np | 在线观看免费国产成人软件 | 91制片厂果冻传媒有限公司 | 三级专区 | 国产视频a | 男人的天堂AV亚洲一区2区 | 在线观看导航 | 男女午夜精华液 | 久久99精品国产99久久 | 一级一级一级毛片 | 免费成人电影在线观看 | 男Ji大巴进入女人的视频小说 | 国产日韩亚洲精品视频 | 久久精品午夜一区二区福利 | 久久99国产精一区二区三区 | 韩国日本香港三级 | 欧美日韩高清不卡一区二区三区 | 日本三级韩国三级香i港三级 | 人妻丰满熟妇V无码区A片免费看 | 日韩欧美二区在线观看 | 成人网18免费下 | 欧美一区二区视频在线观看 | 91.com在线观看 | 春雨电影大全免费观看在线播放 | 欧美成人se01短视频在线看 | 春色校园亚洲综合小说 | 久久精品这里是免费国产 | 91在线看片一区国产 | 中文无码有码亚洲 欧美 | 久久天天躁狠狠躁夜夜躁 | 天天天天天天操 | 亚洲精品午夜久久久伊人 | 进进出出好涨啊粗大动态图 | 美女视频大全视频a免费九 美女三级毛片 | 国产熟妇精品一区二区 | 日本在线精品视频 | 抖阴成人版 | 一级毛片免费不卡 | 成人福利在线看 | 在线观看高清黄网站免费 | 美景之屋4免费观看高清 | 三级在线观看中文字幕完整版 | 午夜DJ影院在线观看免费完整高清 | 午夜免费观看_视频在线观看 | 国产色婷婷亚洲99精品 | 国产九九九九九九九A片 | 亚洲特黄大黄一级毛片 | 岛国三级视频 | 97人妻熟女中文免费视频 | 狠狠操夜夜| WW欧日韩视频高清在线 | 亚洲第一福利视频 | 午夜性做爰电影 | 满天星电影在线观看完整免费 | 亚洲精品久久久久久久观小说 | 宝贝舒服吗好紧好多水小说 | 在线亚洲精品福利网址导航 | 1区2区3区产品乱码免费 | 性一交一乱一伦在线播放 | 精品无码人妻一区二区三区国产 | 免费看黄色毛片 | 国产 亚洲 网友自拍 | 黄 色一 片 级 日本 | 你好种地少年免费观看完整版 | 成年人网站免费看 | 国产乱人伦AV麻豆网 | chinese国产乱在线观看 | 久热久| 真人性做爰无遮A片免费 | 久久a在线视频观看 | 免费中文字幕不卡视频 | 亚洲精品久久久久秋霞 | 菊色宫快播电影 | 免费观看大片bbb | 久久久久一区二区三区 | 亚洲高清视频一区 | 国产综合在线播放 | 欧美3d怪物交videos网站 | 污视频软件app下载 污视频下载 | 亚欧免费观看在线观看更新 | 伦理秋霞电院百 | 国产人妻一区二区三区久 | 日韩精品无码一区二区三区 | 亚洲精品无码一区二区三区网雨 | 丁香五月天综合缴情网 | 久久免费资源 | 国产精品无码视频一区二区 | 日本免费网址大全在线观看 | 黄AV国产永久免费网站 | 美国毛片一级 | 麻豆一二三四区乱码 | 欲求不満の人妻松下纱荣子 | 自拍 偷拍 亚洲 欧美 另类 | 国产在线精品视频二区 | 国产又色又爽又高潮免费视频麻豆 | 国产真实伦在线观看视频 | 秋香蕉丝瓜榴莲污APP下载 | 色欲天天婬色婬香视频综合网 | 亚洲精品资源在线 | 无码人妻国产精品久久 | 亚洲日本久久久午夜精品 | 一本在线不卡免费观看 | 伊人中文字幕波多野结衣 | 亚洲91| 午夜福利免费视频921000电影 | 日本在线日本中文字幕日本在线视频播放 | A片人澡C片人人妻 | 中文字幕亚洲欧美一区 | 天天噜噜色 | 欧美综合区自拍亚洲综合图 | 久久久久久久99久久久毒国产 | 东京热中文无码 在线 | 成年黄网站在线观看免费 | 在线成年av动漫电影 | 第一次破處在线国语视频播放 |