[机] 氯化硼

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(113) / 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(83) / 评论(0)

科技之光

VOA慢速英语2011--New Young Artists Honored With Awards fr

AMERICAN MOSAIC - New Young Artists Honored With Awards from Scholastic Corporation CHRISTOPHER CRUISE: Welcome to AMERICAN MOSAIC in VOA Special English. (MUSIC) I'm Christopher Cruise. On our program this week, we play music from Lady Gagas latest

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2011年VOA慢速英语(五)月

【英语时差8,16】Smirting 以借火和某人搭讪

Smirting 以借火和某人搭讪 Diarmuid: Hello Im Diarmuid. Feifei: Why are you looking so happy Diarmuid? Diarmuid: Well, earlier today, I was outside on my telephone, when a lady asked me for a lighter. I think she might have been trying to smir

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英语时差8，16

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(112) / 评论(0)

口腔临床英语对话

名人演讲 Statement on the Articles of Impeachment

Thank you, Mr. Chairman. Mr. Chairman, I join my colleague Mr. Rangel in thanking you for giving the junior members of this committee the glorious opportunity of sharing the pain of this inquiry. Mr. Chairman, you are a strong man, and it has not be

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名人演讲

英语语法：108 When to Use Articles Before Nouns

Several listeners have written with questions on when to use the definite article the, the indefinite article a, or neither. For example, Tracy W. wrote, Which is correct: Thank you for taking time to review my application, or Thank you for taking th

发表于:2019-01-02 / 阅读(66) / 评论(0)

英语语法 Grammar Girl

VOA慢速英语2018 新报告揭秘稀有蓝钻的历史

New Report Shares Secrets of Rare Blue Diamonds History The Hope Diamond is one of the worlds most famous jewels. It was in the possession of a series of people: kings, bankers, rich women and thieves, before its arrival 60 years ago at the Smithsoni

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2018年VOA慢速英语(八)月

AMERICAN MOSAIC - Artists Honored at an African American Awa

AMERICAN MOSAIC -April 12, 2002: Artists Honored at an African American Awards Ceremony / Yosemite National Park / New Museum of Folk Art HOST: Welcome to AMERICAN MOSAIC — VOA’s radio magazine in

发表于:2019-01-08 / 阅读(130) / 评论(0)

American Mosaic

VOA标准英语2012--Young Kenyan Artists Face Tough Market

Young Kenyan Artists Face Tough Market At the Kuona Trust, a visual arts center in a Nairobi suburb, artists work out of converted shipping containers. Kuona's mission is to provide opportunities for its artists to produce world-class art in Kenya. S

发表于:2019-01-13 / 阅读(55) / 评论(0)

VOA标准英语2012年(八月)

VOA标准英语2011--Contemporary Events Inspire Arab Hip-Hop Artist

Contemporary Events Inspire Arab Hip-Hop Artist A Moroccan woman who only discovered her talent as a hip-hop performer when she came to study in London is now at the forefront of this musical genre. Master Mimz delivered her own commentary on the Ara

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VOA标准英语2011年(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

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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

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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(100) / 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(86) / 评论(0)

英语单词荟萃

英文原版对话1000个:791 Favorite Artist

Todd: Shona, do you have any talents or interests like art or music or cooking? Shona: Yeah. Actually, I really, really enjoy art. I like to sort of study different artists and look at art from the past, but I also paint myself so I like to go to art

发表于:2019-02-09 / 阅读(57) / 评论(0)

原版英语对话1000个

"The Artist' a Big Winner at Oscars

The black-and-white film The Artist was the big winner at Sunday's 84th Annual Academy Awards -- the Oscars -- capturing best picture and major awards for its director and lead actor. Frenchman Jean Dujardin won the Oscar for Best Actor for his role

发表于:2019-02-18 / 阅读(292) / 评论(0)

英语新闻

"The Artist" garners 4 honors at Indie Spirit Awards

LOS ANGELES, Feb. 25 (Xinhua) -- The contender for top Academy Awards including best director and picture The Artist won big at the 27th annual Film Independent Spirit Awards held Saturday afternoon in Santa Monica, California, grossing four major ho

发表于:2019-02-18 / 阅读(283) / 评论(0)

英语新闻

'Hugo', 'The Artist' Win First Oscars

Veteran Oscar Host Billy Crystal opened the 84th Academy awards ceremony Sunday with jokes about his age and attempts to attract a younger audience to the annual show. The segment included a long pause while Crystal, who has hosted the awards show ni

发表于:2019-02-19 / 阅读(284) / 评论(0)

英语新闻

VOA慢速英语2012 AMERICAN MOSAIC - Artists Paint the Town in Baltimore

AMERICAN MOSAIC - Artists Paint the Town in Baltimore JUNE SIMMS: Welcome to AMERICAN MOSAIC in VOA Special English. (MUSIC) Im June Simms. This week on our program, we talk to Ben Nichols, lead singer and songwriter for the band Lucero. We also repo

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2012年VOA慢速英语(四)月

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ableist

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bordism