[网络] 氟化锆

SSS 2010-12-29

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Beauty is only skin deep. And the beauty of shiny white teeth is even less deep. Because a new study shows that fluoride forms a thinner protective shiel

发表于:2018-12-02 / 阅读(179) / 评论(0)

Scientific American(十二)月

Dental Health

07 牙病的预防与治疗 DATE=2-27-01 TITLE=SCIENCE IN THE NEWS #2113 - (1)Dental Health BYLINE=Nancy Steinbach VOICE ONE: This is Sarah Long. VOICE TWO: And this is Bob Doughty with Science in the

发表于:2018-12-07 / 阅读(138) / 评论(0)

科技之光

美国国家公共电台 NPR How Dangerous Is Zika For Babies, Really?

DAVID GREENE, HOST: Earlier this year, you might remember the Zika virus was spreading through the Americas, and the situation looked dire. Brazil was reporting more than a thousand cases of microcephaly, a condition in which babies are born with ext

发表于:2018-12-17 / 阅读(134) / 评论(0)

2016年NPR美国国家公共电台12月

口腔临床英语对话第29期:正畸治疗(2)

Is it necessary to have cavities in the baby teeth repaired? 乳牙蛀成了洞还有必要补上吗？ If the baby teeth are going to fall out, I don't think that it matters if they become decayed. 如果乳牙是要脱落的，我想蛀了也没有关

发表于:2018-12-27 / 阅读(167) / 评论(0)

口腔临床英语对话

U2 绝对经典 muzik u2

发表于:2019-01-10 / 阅读(249) / 评论(0)

欧美绝对经典 U2

Chinese Ye wins 200m medley while Liu Zige dim

Chinese Ye wins 200m medley while Liu Zige dim BEIJING, Nov. 2 (Xinhua) -- London Olympic double winner Ye Shiwen claimed the women's 200-meter individual medley gold medal at the short course Beijing World Cup here on Friday, while Beijing Olympic c

发表于:2019-01-10 / 阅读(179) / 评论(0)

英语新闻

天籁音乐:Ramzi-Say Goodnight

来自英国的帅哥Ramzi当年以一首Say Goodnight让世界认识了他，那首歌真是百听不厌啊！今年Ramzi终于推出了首张大碟Chapter One。听了一下，很有RB天王Craig David的风范！ Say Goodnight Ramzi sitting you w

发表于:2019-01-10 / 阅读(172) / 评论(0)

天籁音乐

英语歌曲:Ramzi-You Never Said Goodbye

来自英国的帅哥Ramzi当年以一首Say Goodnight让世界认识了他，那首歌真是百听不厌啊！2009年Ramzi终于推出了首张大碟Chapter One。听了一下，很有RB天王Craig David的风范！ You Never Said Goodbye Ramzi hey,

发表于:2019-01-10 / 阅读(139) / 评论(0)

天籁音乐

巴西罕见病毒Zika致婴儿小头

Is Zika Virus in Brazil Causing Brain Damage in Babies? 巴西罕见病毒Zika致婴儿小头 From VOA Learning English, this is the Health Lifestyle report. Health officials in Brazil have declared a state of emergency in several states. They are al

发表于:2019-01-12 / 阅读(161) / 评论(0)

2016年VOA慢速英语(一)月

Update: Breakthrough in Fighting Zika

Update: Breakthrough in Fighting Zika From VOA Learning English, this is the Health Lifestyle report. Researches have reported a breakthrough in the search for a treatment for Zika virus. To better understand this report, you will need to know the fo

发表于:2019-01-12 / 阅读(215) / 评论(0)

2016年VOA慢速英语(十一)月

VOA标准英语2010年-Coal Burning Linked to Fluoride Diseas

A cluster of villages in China's Guizhou province has been plagued by an outbreak of disease that damages teeth and bones. Now, a new study by Chinese and American researchers puts the blame on polluted coal burned in home fireplaces. In small quanti

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VOA标准英语2010年(十)月

科学美国人60秒 SSS 海狸牙齿的奥秘

Ah yes.The ol' fluoride rinse at the dentist. Not pleasant. But hey, good for your teeth, right? 没错，这是牙医洗牙用的含氟漱口水。确实够闹心的。但毕竟对你的牙齿有益不是吗? Well now materials scientists have been

发表于:2019-01-20 / 阅读(144) / 评论(0)

2018年科学美国人1月

SCIENCE IN THE NEWS - Dental Health

SCIENCE IN THE NEWS - November 26, 2002: Dental Health By Nancy Steinbach VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with Science in the News, a VOA Special English program abo

发表于:2019-01-30 / 阅读(143) / 评论(0)

科技之光

学个词 Learn a Word-VOA英语教学 2280-fluoride

今天我们要学的词是 fluoride. Fluoride 氟化物。The U.S. government is lowering the recommended amount of fluoride added to drinking water for the first time in more than 50 years. 美国政府50多年来首次降低饮用水建议添加的氟

发表于:2019-02-02 / 阅读(141) / 评论(0)

英语单词荟萃

音乐咖啡厅:Ramzi - Love Is Blind

音乐咖啡厅:Ramzi - Love Is Blind 相关介绍：来自英国的帅哥Ramzi当年以一首Say Goodnight让世界认识了他，那首歌真是百听不厌啊！今年Ramzi终于推出了首张大碟Chapter One。听了一下，很有RB天王Crai

发表于:2019-02-03 / 阅读(205) / 评论(0)

音乐咖啡厅

音乐咖啡厅:Ramzi - Say Goodnight

音乐咖啡厅:Ramzi - Say Goodnight 相关介绍：来自英国的帅哥Ramzi当年以一首Say Goodnight让世界认识了他，那首歌真是百听不厌啊！今年Ramzi终于推出了首张大碟Chapter One。听了一下，很有RB天王Crai

发表于:2019-02-04 / 阅读(197) / 评论(0)

音乐咖啡厅

China launches Ziyuan III satellite

TAIYUAN, Jan. 9 (Xinhua) -- China successfully launched the Ziyuan III satellite Monday from the Taiyuan Satellite Launch Center in northern Shanxi province. The satellite, a high-resolution remote-sensing satellite for civilian use, was launched at

发表于:2019-02-11 / 阅读(131) / 评论(0)

英语新闻

英闻天下——337 Lanzhou Guzi

Dating back as far as the early Qing Dynasty, Lanzhou Guzi, the local ballad of Lanzhou, the capital of northwest China's Gansu province, has been passed on from mouth to mouth for about 400 years. Going through ups and downs, this art form has survi

发表于:2019-02-14 / 阅读(171) / 评论(0)

英闻天下

音乐咖啡厅:Ramzi - Murder

音乐咖啡厅:Ramzi - Murder 相关介绍：Ramzi 虽然出生在英国，但他大部分的童年都在非洲和中东度过。Ramzi 是一个多才多艺的歌手、音乐家、演奏家、词曲作者和制作人。他出生在一个充满音乐的

发表于:2019-02-18 / 阅读(183) / 评论(0)

音乐咖啡厅

音乐咖啡厅:Ramzi - You Never Said Goodbye

音乐咖啡厅:Ramzi - You Never Said Goodbye 相关介绍：来自英国的帅哥Ramzi当年以一首Say Goodnight让世界认识了他，那首歌真是百听不厌啊！今年Ramzi终于推出了首张大碟Chapter One。听了一下，很有RB天

发表于:2019-02-18 / 阅读(199) / 评论(0)

音乐咖啡厅

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antisymmetric representation