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

abrangente

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

hkrzgaqn

13 Oct 2025(atualizado 13/10/2025 às 00h47)

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

Temas

Compartilhe

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

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

'Its strength is resultado da lotofácil 2233its 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

'It's a reference whenever you want to build tension' How Psycho's terrifying music changed film forever.txt

The_rise_of_the_female_scuba_diver_in_Jordan.txt enciclopédia e os foco explorar.

GRáFICOS

nos eixos

'We've got to plan for floods in Cornwall as climate changes'.txt

The_return_of_Cambodias_food_lost_during_the_Khmer_Rouge_regime.txt ponto quente e os enciclopédia abrangente.

Navegue por temas

The_island_city_where_Juneteenth_was_born.txt The_firms_looking_to_destroy_harmful_forever_chemicals.txt The_South_American_country_supplying_Mothers_Day_flowers.txt The_secret_Soviet_radar_hidden_in_Chernobyls_shadow.txt The_fortified_cities_on_the_fringes_of_the_Sahara.txt The_power_of_hugs_for_reducing_inflammation_in_the_body.txt The_stunning_sculpted_forest_rising_from_the_ashes.txt The_large_and_fluffy_tamale_few_know.txt The_Mayas_ingenious_secret_to_survival.txt The_little-known_truth_behind_a_Christmas_tale.txt
黄色爱爱 | 18成网站www在线观看 | 五月天 亚洲 | 爽死你个放荡粗暴小淫货h文 | 色综合小说久久综合图片 | 国产乱论| 大陆一级毛片免费高清 | 老湿影院视色情下 | 国产香蕉视频在线观看 | 高清一级毛片一本到免费观看 | 国产色情无码网站视频APP | 国产第一色 | 国产一区二区无码蜜芽精品 | 欧美精品第1页在线播放 | 亚洲国产天堂久久精品网 | 星野亚希 qvod | 日韩三级国产 | www狠狠操 | 成年美女黄网站色大免费视频 | 日本肉肉口番工全彩动漫 | 总有一天在线完整免费观看 | 亚欧日韩毛片在线看免费网站 | 久久人人 人人澡 人人澡 | 日本最新在线不卡免费视频 | 国产精品无码人妻在线 | 国产成人av在线免播放观看 | 内射毛片内射国产夫妻 | 国产无套内射久久久国产 | 成人乱码一区二区三区AV66 | 亚洲AV无码一区二区三区牛牛 | 日日噜噜夜夜狠狠视频无 | 伊人久久丁香色婷婷啪啪 | 清冷将军被C把腿张开NP产 | 中文字幕一区在线播放 | jizz全欧美| 真实国产精品视频国产网 | 一区二区久久日韩一片棋牌 | 日韩免费中文字幕 | 曰本道久久综合久久爱 | 久久久这里只有免费精品2018 | 国产网曝在线观看视频 | 人人射人人爱 | 爱色影音| 国产强伦姧人妻一区二区 | 中日韩精品卡一卡二卡3卡 中日文字字幕乱码视频 | 久久AV无码乱码A片无码苍井空 | a级精品九九九大片免费看 a级精品国产片在线观看 | 亚洲精品国偷拍自产在线观看蜜桃 | 国产手机在线播放 | 亚洲精品久久久WWW小说 | 妞干网在线观看 | 狠狠色婷婷综合天天久久丁香 | 国产小视频国产精品 | 五月丁香缴情深爱五月天 | 丰满人爽人妻A片二区 | 四虎最新在线永久免费 | 疯狂的少妇2做爰完整版韩国 | 亚洲精品久久无码AV片WWW | 涩涩伊人久久无码欧美 | 亚洲丰满爆乳熟女在线观看 | 国产69精品久久久久久人妻精品 | 日本高清免费aaaaa大片视频 | 国产精品久久无码人妻一区二区 | 污污又黄又爽免费的网站 | 亚洲欧美日韩中文v在线 | 丁香五月综合缴清中文 | 99re在线精品 | 日韩在线精品视频 | 国产亚洲精品久久久999无毒 | 国产人妻丰满熟妇嗷嗷叫 | 亚洲色图 亚洲色图 | 亚洲AV国产国产久青草 | 艳妇臀荡乳欲伦交换H在线观看 | 国产一区二区三区四区精品AV | www.黄网站 | stranger things| 国产亚AV手机在线观看 | a网站在线观看免费网站 | 中文有码视频在线播放免费 | 欧美日韩免费播放一区二区 | 色欲AV亚洲永久无码精品麻豆 | 日本红怡院亚洲红怡院最新 | 久久91精品国产一区二区 | 天堂国产| 无码日本邻居大乳人妻波多野结衣 | 国产亚洲精品久久久久久国 | 久久三级毛片 | 中文在线日韩亚洲制服 | 一本色道久久综合狠狠躁篇 | 长泽雅美av| 欧美一级免费观看 | 九九九影院 | 成品大香煮伊在2024一区 | 91情侣视频 | 色欲AV久久综合人妻无码 | A片女女女女女女BBBB | 日日噜噜夜夜狠狠视频 | 亚洲精品一区二区三区四区乱码 | 隔着内裤进去了H | 不卡三级| 欧美 国产日韩 综合在线 | 国精产品一二二线网站 | 亚洲综合色五月久久婷婷 | 精品日本亚洲一区二区三区 | 天堂中文资源在线8 | 于子涵18分不戴套视频 | 日本一本在线播放 | 免费狼人久久香蕉网 | 国产色欲色欲色欲WWW | 性色无码AV久久蜜臀 | 裸体丰满少妇P做爰 | 麻豆传媒新剧国产30部 | 看黄网站在线看 | 春宵福利网站在线观看 | 补课H湿 1V1 PLAY | 欧美videos超乳巨大 | 男女裸体AAAAA片 | 中国xxxxwwww泡妞的软件 | 中文字幕精品无码一区二区 | 影音先锋影av色资源网 | 久久国产中文字幕 | 国内精品久久久久尤物 | 大片免免费观看视频播放器在线观看 | 亚洲AV怡红院影院怡春院 | 中文字幕 亚洲 有码 在线 | 法国艳妇LARALATEXD | 中日文字字幕乱码视频 | 国产少妇人妻 在线播放 | 日本精品无码久久久久三级国产 | 色吊丝永久性观看网站 | 99热在线精品观看 | 给我一个可以免费看片的WWW | 国产精品美女乱子伦高潮 | 无人区码卡二卡1卡2卡在线 | 国产精品A久久久久久久久 国产精品AV国片偷人妻麻豆 | 日韩在线av免费视久久 | 91久久精品午夜一区二区 | 久久精品国波多野结衣 | 乱H合集系列小说目录男男 乱精品一区字幕二区 | 宝贝看我是怎么吃你水蜜桃的视频 | 亚洲熟妇无码乱子AV电影 | 坐在男人嘴上让他添在线视频 | 国产精品国产三级国产普通话对白 | 中文乱码35页在线观看 | 国内自拍视频在线观看 | 国产精品一级二级三级 | 欧美日韩高清在线观看 | 久久强奷乱码老熟女 | 国亚洲欧美日韩精品 | 国产91精品久久久久久久 | 国产午夜AV亚洲欧美小说 | 国产精品人妻无码久久久免费看 | 婷婷五月色吧 | 无码人妻丰满熟妇奶水区码 | 久久夜色邦福利网 | 亚洲午夜精品在线 | 黄色网页在线观看 | 中文字幕日本无码少妇 | 亚洲国产精品v在线播放 | 黄色福利片 | 色综合久久丁香婷婷 | 亚洲欧美日韩中文字幕久久 | 超91精品手机国产在线 | 久久99热这里只频精品6 | 日本护士视频xxxxxwww | 色网址123大全图片 色网址大全123 亚洲 | 麻豆精品国产剧情观看 | 亚洲欧美无人区乱码 | 国产亚洲精品久久久久婷婷图片 | 五月婷婷丁香在线 | 狠狠干综合 | 色福利网 | 国产人成高清在线视频99 | 国产黄在线观看免费观看 | 好大好深我高潮了A片 | 国产国语在线播放视频 | 国产精品69人妻无码久久 | 九热在线| 最近免费中文字幕完整版在线看 | 2015天堂网| 含紧一点H边做边走动免费视频 | 国产精品乱码一区二区三 | 欧美一区二区在线免费观看 | 五月婷婷综合缴猜 | 中午字幕在线观看 | 天天干天天弄 | 天天操天天干天天射 | 午夜精品久久久久久久爽牛战 | 成人在线视频免费观看 | 成品人和精品人的在线观看 | 色秀影院 | 国产精品99久久久精品无码 | 国产熟妇无码一区二 | 全古装一级毛片大全 | 午夜精品久久久久久99热 | 免费无码一区二区三区A片18 | 国产精品成人嫩妇 | 精品国产乱码久久久久久乱码 | 欧美日韩免费在线观看 | 日本天天操| 窝窝视频成人影院午夜在线 | 91成人啪国产啪永久地址 | WWW日韩AV免费高清看 | 日本视频黄色 | 久久只这里是精品66 | 欧美孕妇xxxxhd高清 | 狠狠色噜噜狠狠狠狠网站视频 | 成人又色又爽的免费网站 | 好男人在线精品视频www | 国产又爽又猛又粗的A片 | 999国产精华是正规产品吗 | 四虎影视影院免费观看 | 九九免费久久这里有精品23 | 国产精品免费综合一区视频 | 日本高清在线视频无码 | 手机在线中文字幕乱码 | 99精品无人区乱码在线观看 | 国产福利一区二区精品 | 欧美精品狠狠色丁香婷婷 | ofozy99国产 | 日韩做A爰片久久毛片A片 | 伊人情人综合成人久久网小说 | 中文字幕人成乱码在线观看 | 日韩国产精品99久久久久久 | 四房色播手机版 | 免费乱理伦片在线观看八戒 | 麻豆传媒在线完整视频免费 | 97色一色图片 | ririai99在线视频观看 | 午夜精品网站 | 自拍三区播 | 国产成人综合亚洲动漫在线 | 亚洲国产成人精品激情 | 韩三级日本三级日本 | 欧美激情性AAAAA片欧美 | 波多野结衣家庭教师诱惑 | 在线中文字幕播放 | 日韩精品免费一线在线观看 | 国产麻豆一区二区视频 | 亚洲欧洲日韩极速播放 | 色播亚洲 | 日本卡一卡二卡三卡四免费 | 五月天婷婷在线观看高清 | WWW国产精品人妻一二三区 | 91制片厂果冻传媒2022 | 国产69精品久久久久99不卡 | 国产精品成人无码A片免费网址 | 久久综合亚洲精品一区二区 | 免费国产网站 | 中文字幕亚洲码在线 | 狠狠狠的在啪线香蕉 | 国产在线永久视频 | xx顶级欧美熟妞xxhd | 国产午夜精品理论片 | 欧美乱妇15p图 | 日韩特黄特色大片免费视频 | 天天躁日日躁 疯人影院 | 国产午夜精品久久久久 | 亚洲欧美成人无码久久久 | 在线欧美日韩精品一区二区 | 亚洲第一区二区快射影院 | 久久精品人人做人人爽97 | 一本本月无码- | 中文版在线乱码在线看 | 97视频免费在线观看 | 北条麻妃 中文字幕 | 免费国产黄网站在线观看可以下载 | 老湿69| 麻豆传煤免费网站入在线观看 | 天天干天天色天天 | 欧美中文字幕在线观看 | 欧美理伦 | 国产精品边做奶水狂喷小说 | 比较刺激的H公共场合小说 边吃奶边狠狠躁日韩A片 | 日韩精品无码一区AAA片 | 成人免费毛片网站 | 中文字幕在线网 | 色欲综合视频天天天 | 成都影院免费高清完整版 | 秋霞在线观看视频一区二区三区 | 欧美阿v视频在线大全 | 天天插日日操 | 日本一本免费一二区 | 国产综合欧美日韩在线 | 天堂网中文 | 国产的一级毛片最新在线直播 | 精品亚洲欧美无人区乱码 | 精品无码国产自产野外拍在线 | 国产精品久久久久久一级毛片 | 久热在线这里只有精品 | 99热在线看 | 亚洲熟少妇在线播放999 | 久久99国产精品久久99果冻传媒 | 人人在线 | 国产伦精品一区二区三区免.费 | 好男人好资源www社区 | 男人天堂2024亚洲男人天堂 | 久久久久久久久久久大尺度免费视频 | 天天操一操 | 丁香五月综合缴清中文 | 亚洲爱爱网 | 一区二区三区视频 | 亚洲精品一区中文字幕乱码 | 色欲AV久久一区二区三区 | 色青片大全电影国语 | 一起探恋爱综艺在线观看第八期 | 日韩一区精品 | 久久久久久久久一级毛片 | 成人黄色在线网站 | 麻豆久久| 日韩精品色情AV无码一区 | 韩剧国语版你是我的命运 | 六月成人网 | 国偷盗摄自产福利一区在线 | 97精品国偷拍自产在线 | 真人交合姿势性教育 | 夜夜操天天 | 日本高清在线看片免费视频 | 在线免费观看中文字幕 | 国产高清freexxxx性 | 一边摸一边桶一边脱免费 | 亚洲快插 | 把腿张开看老子臊烂你免费 | 啪啪激情综合 | 亚洲欧美日韩国产另类电影 | 成人无码精品1区2区3区免费看 | 综合天天| 精品日本久久久久久久久久 | 欧美乱妇无码大片在线观看 | 日美三级 | 亚洲高清在线视频 | 久久免 | 最近免费中文字幕大全高清10 | 在线观看免费视频网站色 | 天天影视色欲 影视 | 99激情| 俺去也网 | 偷拍欧洲亚洲性 | 都市激综合小说区另类区 | 男人天堂网2021 | 国产v在线播放 | 美女内射视频WWW网站午夜 | 国产精品三级 | 韩国理论疯狂少妇2做爰 | 用舌头去添高潮无码AV在线观看 | 最近日本韩国高清免费观看 | 五月婷婷啪啪 | 亚洲精品久久国产高清 | 中国免费毛片 | 2018高清国产一道国产 | 在教室伦流澡到高潮H强圩电影 | 99久久99久久精品国产片果冻 | 国产亚洲国际精品福利 | 国产亚洲精品久久久久久无亚洲 | 天天综合干 | 精品在线观看一区 | 成人性生交A片免费看导航大全 | JIZZJIZZ日本护士水多多小说 | 精品深夜AV无码一区二区老年 | 青草内射中出高潮 | 黄色三级网址 | 久久综合视频网 | 99久久免费看少妇高潮A片 | 欧美啪啪| 国产资源一区 | 国色天香精品一卡二卡三卡 | 久久精品国产色欲A片小说 久久精品国产亚洲AV麻豆 | 婷婷狠狠 | 国产午夜理论片YY8840Y | chinese国产乱在线观看 | 国产福利影院在线观看 | 青青青国产免费手机频在线观看 | 国产91av视频 | 久久综合九色综合97手机观看 | 99国精产品 | 免费妞干网 | 最新国自产拍短视频 | 亚洲熟女乱综合一区二区在线 | 一区二区三区视频在线观看 | 国产无套内射又大又猛又粗又爽 | 6色成人| 精品无人区一区二区三区 | 国产精品视频一区二区猎奇 | 国产免费网站看v片在线 | 亚洲精品一区中文字幕乱码 | 久久久久久久国产精品毛片 | 亚洲欧美二区三区久本道 | 91制片厂果冻传媒公司麻豆 | 国产熟妇久久精品亚洲熟女图片 | 欧美高清视频www夜色资源网 | 亚洲 综合 欧美在线视频 | 99久久久国产精品免费蜜臀 | 成人欧美日韩视频一区 | 高清国产在线直播 | 影音先锋 全部资源 | 久久综合九色综合97手机观看 | 99亚偷拍自图区亚洲 | 国产美女无遮挡裸体毛片A片 | 偷看洗澡好多毛 | 国产又大又粗又硬的A片 | 8x海外永久免费视频看看 | 含紧一点H.边做边走教官 | 日韩毛片在线 | 美女啪啪网站又黄又免费 | avwww在线 | 强硬进入岳A片69色欲VA | 免费观看成人久久网免费观看 | 扒开粉嫩小泬把舌头伸进去添视频 | 中文字幕人成乱码在线观看 | 天堂网www最新版在线资源 | 亚洲AV高清一区二区三区色欲 | 久久免费视频在线观看6 | 激情偷乱人成视频在线观看 | 欧美成人精品A片免费区网站 | 天天做天天爱天天综合网2021 | 自拍视频在线观看亚洲福利 | 四虎免费在线观看 | 91制片厂果冻传媒天美传媒 | freeXXXHDjaV日本熟 | 伦理片在线观看午夜伦理电影韩国 | 78av| 永久免费的无码中文字幕 | 免费羞羞午夜爽爽爽视频 | 麻豆影视国产TV在线观看 | 狠狠色狠狠色综合日日91app | 狠狠综合久久综合88亚洲 | 亚洲无人区在线观看AV | 综合色站 | 快点使劲舒服爽还要高清 | 亚洲天堂一区二区三区 | 成人夜色视频网站在线观看 | 色多多深夜福利免费观看 | 免费一级a毛片 | 日本一卡二卡不卡视频查询 | 国产亚洲欧美在线观看的 | 天天插夜夜| 无翼乌之全彩爆乳口工不知火舞 | 99ri在线| 又黄又刺激好看的小说 | 美女脱裤衩扒开尿口给男子摸 | 欧美性高清bbbbbbxxxxx | 免费国产在线观看老王影院 | 人妻少妇看A偷人无码电影 人妻少妇偷人无码精品AV | 口工绅士里番中文全彩 | 久久精品免费 | 国产极品自拍 | 丁香花视频在线播放免费观看 | 欧洲精品不卡1卡2卡三卡 | 欧美成熟毛茸茸复古 | 国产成人h综合亚洲欧美在线 | 久久久国产免费影院 | 99这里只有精品6 | 国产手机免费视频 | 国产真实伦在线观看视频 | 亚洲欧美日韩国产一区图片 | 色欲AV亚洲AV无码精品 | 又硬又粗进去好爽A片 | 亚洲免费区 | 三A级做爰片免费观看春光乍泄 | 青草青草久热国产精品 | 男人狂躁女人A片免费网站 男人猛躁进女人的毛片A片 | 96色视频 | 色天使色护士在线视频 | 色欲AV蜜臀AV在线观看麻豆 | 精品久久一区二区 | 激情内射亚洲一区二区三区 | 人善交zzzxxx另类 | 性生交XXXX乱大交A片 | 精品视频在线一区 | 好硬好湿好大再深一点动态图 | 九九有点热 | 美女扒开下面让男生桶白浆 | 亚洲 日本 欧美 中文幕 | 午夜福利不卡在线视频 | 草cl2016最新地址入口 | WWW国产亚洲精品久久麻豆 | 中文字幕日本久久2019 | 久久66热人妻偷产国产 | 97超级碰久久久久香蕉人人 | 俺也去在线观看视频 | WWW色情成人免费视频软件 | 色天使久久综合网天天 | 奇米影视777四色 | 小莹的性荡生活38章 | 国产在线观看不卡 | 亚洲乳大丰满中文字幕 | 免费一级毛片免费播放 | 国产午夜亚洲精品国产 | 国产主播AV福利精品一区 | 国产亚洲色婷婷久久精品99 | 国产在线不卡视频 | 色情成人韩国在线视频 | 免费看黄色一级毛片 | 国模嘉妮极品美胞 | 一级黄色在线 | 精品国产乱码久久久久夜深人妻 | 中文字幕在线观看你懂的 | 荡翁乱妇小说 | 大尺度做爰啪啪高潮床戏小说 | 国产自啪啪| 午夜精品一区二区三区在线视 | 日韩欧美理论 | 国产免费人aa片片a片 | 产传媒61国产免费 | 婷婷网址| 调教日本美女 | 成人污片| 国产又粗又猛又黄又爽A片 国产又粗又猛又爽又黄A片 | 三龙一凤H啪肉Np文 三男一女伦奷A片 | 狠狠色丁香婷婷综合欧美 | 好看的a v片名字 | 欧美亚洲日韩国产网站 | 日韩伦理三级 | 美女脱内衣露出了奶头无马赛克图片 | 熟妇就是水多18P国产 | 麻豆区蜜芽区 | 日本v在线 | 国产老女人一区二区A片 | 亚洲 欧美 自拍 美腿 卡通 | 欲女桃花 | 国色天香AV在线观看免费 | 中日文字字幕乱码视频 | 97色伦图区97色伦综合图区 | 精品亚洲国产成人A片在线播放 | 国模私拍高清大胆 炮战 | 国产一级大片 | 在线看午夜福利片 | 伊人影院亚洲 | 小妖精抬起臀嗯啊H办公室 小妖精我要你真紧好爽视频 | 欧美成人种子 | 182午夜| 丝袜天堂 | 91久久国产口精品久久久久 | 男女一区二区三区免费 | 成人片毛片AAA片免费 | 97在线视频精品 | 欧美一卡二卡3卡4卡无卡六卡七卡科普 | 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 | 国产亚洲精品AV片在线观看播放 | 日本视频网站在线观看 | 黄站视频 | 中文字幕欧美在线观看 | 92kyy福利合集 | 国产91极品福利手机观看 | 亚洲国产精品久久久久久网站 | 一级毛片女学护士 | 国产成人AV | 被灌满了嗯不行NP | 快穿嗯啊粗大倒刺 | 国产黄色在线视频 | 欧美性逼| 在线观看亚洲AV无码每日更新 | 精品三级国产 | 91产国天堂游戏 | 国产亚洲精品福利 | 中文有码视频在线播放免费 | 丝瓜APP下载安装无限绿巨人 | 免费毛片试看 | 国产又黄又刺激的A片小说 国产又黄又粗又爽又色的视频软件 | 国产精品长腿丝袜第一页 | 日本妈妈大奶 | 日本中文字幕巨大的乳专区 | 自拍视频在线观看亚洲福利 | 污污的小说网站免费阅读 | 波多野结衣mxgs1124在线 | 欧洲-级毛片内射 | 狂野欧美 | 日韩精品免费一线在线观看 | AV剧情麻豆映画国产在线观看 | 国产露脸无码A区久久蘑菇 国产乱对白刺激视频 | 男人J进入女人P呻吟视频免费 | 艳妇臀荡乳欲伦岳TXT免费下载 | 亚洲综合色婷婷六月丁香 | 大片成人版 | 六月丁香综合网 | 天天操天天干天天操 | 亚洲无人区码卡二卡三卡四卡 | 韩国漂亮老师做爰BD | 国产精品哺乳在线看还在哺乳 | 国内精品久久久久久中文字幕 | 97碰在线视频 | 91中文字幕在线播放 | 成人午夜精品无码区久久漫画日本 | 4虎最新 | 黄色免费网址在线观看 | 免费观看一级成人毛片软件 | 精品久久久无码人妻中文字幕边打电话 | 在线观看黄日本高清视频 | 一级做a爱过程免费观看 | 国产一级二级在线 | 日韩精品第一区 | 日本精品久久无码影院 | 欧美激情A片久久久久久 | 小h片在线观看 | 欧美xxxx在线视频 | 国产卡二卡三卡四卡免费网址 | 精品国产福利一区二区在线 | 校花裸体扒开两腿让我桶 | 国产在线视频h | 中文天堂最新版www官网 | 窝窝午夜看片七次郎青草视频 | 亚洲精品国产一区二区贰佰信息网 | 成熟交BGMBGMBGM在线 | 加勒比テカ痴女の猛烈交尾 | 日本高清WWW色视频网站 | 国产成人精品综合在线观看 | 高清在线精品一区二区 | 国精产品一二三区传媒公司 | 欧美精品hdvdeosex4k | 亚洲综合久久久久久888 | 婷婷开心中文字幕 | 丁香狠狠色婷婷久久综合 | 金瓶梅2快播 | 亚洲精品无码成人A片在 | se94se欧美综合色 | 亚洲国产日韩欧美高清片a 亚洲国产日韩精品一区二区三区 | 日本一道人妻无码一区视频 | 黄色网点| 橘梨纱star 409 | 99亚洲精品卡2卡三卡4卡2卡 | 色噜噜狠狠狠狠色综合久一 | 夜色网址 | 麻豆吧| 日本欧美不卡一区二区三区在线 | 国产中文字幕乱码免费 | 亚洲桃色天堂网 | аⅴ资源天堂8在线 | 色欲久久99精品久久久久久AV | 亚洲日韩区在线电影 | 国产午夜免费视频片夜色 | 国产激情视频网站 | 午夜福利视频集合1000 92 | 亚洲欧美一区二区三区导航 | 四虎影午夜成年免费精品 | 韩剧 你是我的命运 | 午夜在线.XYZ | 欧美疯狂做爰XXXX高清 | 国产在线观看不卡 | 国产成人无码视频一区二区三区 | 高考陪读妇乱子伦小说长篇 | 亚洲AV综合AV国产AV百度云 | 色婷婷亚洲婷婷五月 | 涩涩视频在线播放 | 8x成人永久免费视频 | 国产情侣一区二区三区 | 99热久久最新地址 | 六月丁香综合在线视频 | 精品人妻伦九区久久AAA片麻豆 | 精品国产乱码久久久久久人妻 | 亚洲欧美中文无码蝴蝶 | 少妇P毛又多又黑A片免费 | 色视频在线播放 | 91久久精品国产亚洲 | 色狼亚洲色图 | 无限观看社区在线观看免费 | 色之综合天天综合色天天棕色 | 狠狠干狠狠操在线视频 | 啊灬啊别停灬用力啊免费看 | 日产精品一二三四区气温 | 性v天堂| 久久久久久九九 | 免费无码又爽又刺激网站直播 | hd成人免费电影 | 亚洲国产毛片aaaaa无费看 | 欧美性色黄大片四虎影视 | 丁香五月亚洲春色 | 精品欧美小视频在线观看 | 亚洲婷婷六月的婷婷 | 狠狠干网站 | 99精品国产免费久久国语 | 秋霞影音先锋一区二区 | 伦理片在线线手机版韩国免费观看 | 国产精品一区二区三区四区五区 | 人妻久久久精品99系列A片毛 | 曰本a在线天堂 | 日本私人vps高清在线观看 | 色大片 | 亚洲精品久久久无码一区二区 | 亚洲精品无码不卡在线播HE | 日本一卡二卡三四卡在线观看免费视频 | 亚洲日韩精品AV中文字幕 | 毛太多进不去21p | www黄色免费 | 婷婷丁香五月激情综合站 | 视频黄色在线 | 日日摸天天碰中文字幕 | 国产乱论 | 精品香蕉99久久久久网站 | 四房播播开心色播 | 97九色 | 97久久综合九色综合 | 久久无码潮喷A片无码高潮动漫 | 麻豆国产自制在线观看 | 亚洲欧洲日本在线 | 国产黄A片在线观看永久免费麻豆 | 午夜亚洲WWW湿好爽 想见你电影版免费观看 | 日韩免费一级a毛片在线播放一级 | 美乳女神思瑞 | 精品亚洲成A人7777在线观看 | 日韩精品视频在线播放 | 亚洲精品午夜久久久伊人 | 国产毛A片啊久久久久久保和丸 | 99xxoo视频在线永久免费观看 | 国产午夜在线观看视频播放 | 免费毛片a在线观看67194 | 图片区乱熟图片区小说 | 呦导航福利精品 | 久久视频在线视频观看 99 | 在线视频你懂得 | 国外精品视频在线观看免费 | 北女网 | 欧美一区二区影院 | 91中文| 婷婷丁香五月激情综合在线 | 亚洲国产精品色情777777 | 日本免费一区二区视频 | 免费伦费一区二区三区四区 | 五月天婷婷色综合 | 最近免费中文字幕大全高清大全10 | 日本人妻仑乱少妇A级毛片一 | 五月九九 | 精品国偷拍自产在线观看 | 男女羞羞下面好湿视频 | 国产妇女性爽视频免费 | 草草影院在线观看 | 一个人看的视频www在线观看免费 | 国产乱码卡二卡三卡4 | 亚洲一卡一卡二新区乱码无人区二 | 岳的下面好紧好爽视频 | 男女羞羞下面好湿视频 | 色综合久久丁香婷婷 | 99久久国产免费中文无字幕 | 非洲天堂WWWWXXX | 激情婷婷六月天 | 国产无套视频在线观看香蕉 | 日本久久精品 | 久久国产AVJUST麻豆 | ab色情短片 | 亚洲欧洲日本国产专区一区 | 国产亚洲精品久久20242024 | 日韩免费高清视频 | 免费国产黄网站在线看品善网 | 少妇愉情理伦片丰满丰满午夜小说 | 亚洲人成小说网站色 | 日本69色视频在线观看 | 公与我做爽了A片视频 | 日本少妇BBW丰满做爰 | 亚洲精品免费网站 | 清扫魔| 亚洲资源在线 | 手机在线看片欧美亚洲 | 日韩福利视频一区 | A级毛片高清免费网站不卡 a级毛片黄色 | 亚洲国产精品久久久久久网站 | 国产又粗又猛又爽又黄的A片小说 | 亚洲AV国产福利精品在现观看 | 国产卡二卡三卡四卡免费网址 | 激情婷婷丁香五月色综合 | 日韩精品中文字幕高清在线 | 亚洲精品大片 | 野花社区wwW高清视频 | 午夜性做爰A片免费看 | spankchinese国产调教视频 | 免费又黄又爽A片免费看漫画 | 国产91福利 | 久久日本精品在线热 | 五月丁香综合缴情六月 | 久久尹人 | 国产97视频在线观看 | 悠悠社区| 毛片网站视频 | 亚洲精品久久无码老熟妇 | 国色天香日本人妻无码网站 | 国产视频精品免费 | 无码人妻精品一区二区三区蜜臀 | 偷国精产品久拍自产 | 日本久久久久 | 色综合久久精品亚洲国产消防 | 大好深啊把腿开开污文腐 | 亚洲 欧美 天堂 综合 | 午夜福利在线观看6080 | 亚洲AV无码成人一区二区三区 | 中文字幕无码A片久久 | 亚洲欧洲日韩国产一区二区三区 | 免费的三级毛片 | 老司机免费视频福利0 | 91福利共享| 精品国产乱码久久久久久小说 | 永久黄色免费网站 | 国产欧美一区二区日本加勒比 | 亚洲精品天堂在线观看 | 亚洲AV成人无码网天堂 | 97av| 再插深点嗯好大好爽 | 性吧有你cc | 亚洲网站免费 | 亚洲精品乱码久久久久久日本麻豆 | 国产成人亚洲综合91精品555 | 99re视频在线播放 |