[化] 含氟染料

WORDS AND THEIR STORIES(27)

WORDS AND THEIR STORIES By Jerilyn Watson Broadcast: Sunday, November 14, 2004 I'm Susan Clark with the Special English program Words and Their Stories. Young Mr. Smith had an idea for his employer. I

发表于:2018-12-01 / 阅读(491) / 评论(0)

WORDS AND THEIR STORIES

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(358) / 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(317) / 评论(0)

科技之光

VOA慢速英语2013 这个想法“不行”，我们再“认真谈谈”吧

Your Idea Will Not Wash. And, Let's Talk Turkey! 这个想法不行，我们再认真谈谈吧 Im Susan Clark with the Special English program Words and Their Stories. 现在是慢速英语《词语掌故》节目，我是苏珊克拉克。 Young Mr.

发表于:2018-12-07 / 阅读(315) / 评论(0)

2013年VOA慢速英语(十一)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(336) / 评论(0)

口腔临床英语对话

英语听力文摘 English Digest 572、神奇的发光色彩？

A Magical Glow? Have you ever wondered why fluorescent colors, like you see in highlighters or clothing dyes, for instance,seem so much brighter than other colors? Its because they seem to reflect more light than they receive! It may sound like a mag

发表于:2018-12-31 / 阅读(277) / 评论(0)

英语听力文摘 English Digest

VOA慢速英语20061029a

WORDS AND THEIR STORIES - It Will Not Wash: Does It Work, or Not?By Jeri Watson Broadcast: Sunday, October 29, 2006 I'm Susan Clark with the Special English program, Words and Their Stories. Young Mis

发表于:2019-01-02 / 阅读(267) / 评论(0)

2006年慢速英语（十）月

NPR 2011-04-01

A barrage of questions today for Defense Secretary Robert Gates and Joint Chiefs Chairman Admiral Mike Mullen. They were grilled extensively on Libya by the House and Senate Armed Services Committees. As NPR's David Welna reports, both Pentagon offic

发表于:2019-01-08 / 阅读(331) / 评论(0)

2011年NPR美国国家公共电台4月

VOA慢速英语2010年-Development Report - Bringing Color to

This is the VOA Special English Development Report. Dye can bring a little color to life. Most clothing is colored with dyes. Modern, manufactured dyes can be costly. Natural dyes from plant and animal products have been used since ancient times. So

发表于:2019-01-11 / 阅读(318) / 评论(0)

2010年VOA慢速英语(八)月

VOA慢速英语2013 词汇典故：这行不通

Words and Their Stories: It Will Not Wash 词汇典故：这行不通 I'm Susan Clark with the Special English program WORDS AND THEIR STORIES. 这里是美国之音慢速英语词汇典故节目，我是苏珊克拉克（Susan Clark）。 Young Mist

发表于:2019-01-12 / 阅读(280) / 评论(0)

2013年VOA慢速英语(三)月

VOA慢速英语2011--Words and Their Stories: It Will Not Was

发表于:2019-01-12 / 阅读(287) / 评论(0)

2011年VOA慢速英语(十)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

发表于:2019-01-14 / 阅读(329) / 评论(0)

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(318) / 评论(0)

2018年科学美国人1月

【英语2级听力】造型师-The Hair Stylist

The hair stylist loves his job. He provides many services. He cuts people's hair shorter. It's very easy for him to do. He charges only $5. He straightens hair. This is hard for him to do. He charges $100. He dyes customers' hair. He lets customers p

发表于:2019-01-24 / 阅读(298) / 评论(0)

英语第2级听力-English Level 2

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(299) / 评论(0)

科技之光

DEVELOPMENT REPORT - Bringing Color to Life With Natural Dye

DEVELOPMENT REPORT - Bringing Color to Life With Natural Dyes By Jill Moss Broadcast: Monday, August 15, 2005 I'm Barbara Klein with the VOA Special English Development Report. Dye can bring a little

发表于:2019-01-30 / 阅读(352) / 评论(0)

农业与发展

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(257) / 评论(0)

英语单词荟萃

艾伦脱口秀第373期:闻起来太不寻常

I don't understand how you've been keeping this from me 我不明白的是你怎么可以一直瞒着我 What,that I love her.No the detergent you've been using,It didn't smell like regular detergent 不明白什么我爱她不是你用的洗衣液

发表于:2019-02-14 / 阅读(254) / 评论(0)

艾伦脱口秀

英语听力—环球英语 1149 Making Cloth to Build Community

Voice 1 Welcome to Spotlight. I'm Joshua Leo. Voice 2 And I'm Liz Waid. Spotlight uses a special English method of broadcasting. It is easier for people to understand - no matter where in the world they live. Voice 1 A woman sits on a high, green mou

发表于:2019-02-21 / 阅读(305) / 评论(0)

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Andrade, Olegarrio Victor