[化] 氟化铅

Lead Me On

turn around to see you in a crowded place i watch for the emotions on a guarded face saying lead me on victim of a dream and a memory but when i try to break free you say to me c'mon lead me on a matt

发表于:2018-11-29 / 阅读(189) / 评论(0)

英语歌曲第九辑

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(130) / 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(96) / 评论(0)

科技之光

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(127) / 评论(0)

口腔临床英语对话

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(106) / 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(92) / 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(106) / 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(102) / 评论(0)

英语单词荟萃

听歌学英语:Love Will Lead You Back

听歌学英语:Love Will Lead You Back 歌词: saying good bye is never an easy thing but you never said you'd stay forever so if you must go darling i'll set you free but in time i know we will be together i won't try to stop you from leaving 'coz

发表于:2019-02-02 / 阅读(111) / 评论(0)

听歌学英语

Inter beat Bari to lead in Serie A

ROME, Sept. 22 (Xinhua) -- Diego Milito broke his goal drought（进球荒） on Wednesday to help Inter Milan thrash Bari 4-0, while Roma slipped into（溜进） the relegation zone as they were beaten 2-1 by Brescia. Milito（米利托） was on t

发表于:2019-02-05 / 阅读(115) / 评论(0)

英语新闻

Heart scans may lead to misdiagnosing

BEIJING, May 24 (Xinhuanet) -- CT scan, a widely used heart-imaging test, is likely to result in the over treatment for patients with heart disease, according to a study published online by the Archives of Internal Medicine on Monday. CT, which produ

发表于:2019-02-06 / 阅读(92) / 评论(0)

英语新闻

VOA常速英语2008年-Clinton Holds Lead Over Obama in Pennsylvania A

By Jim Malone Washington 02 April 2008 A new public opinion poll shows Democrat Hillary Clinton's lead over rival Barack Obama in Pennsylvania is down slightly as both contenders campaign in advance of the primary there on April 22. VOA National corr

发表于:2019-02-08 / 阅读(124) / 评论(0)

VOA常速英语2008年（四月）

Kobe lifts Lakers to blow off Hornets' 25-point lead

NEW YORK, March 6 (Xinhua) -- Kobe Bryant finished with 42 points and 12 assists to help the Lakers make up 25-point deficit in the second half and beat the Hornets 108-102 Wednesday at New Orleans. Kobe, who injured his right elbow in a loss at Okla

发表于:2019-02-13 / 阅读(83) / 评论(0)

英语新闻

Real make clear lead with home win with Barca held

MADRID, Jan. 29 (Xinhua) -- Real Madrid opened up a seven point lead at the top of the BBVA Primera Liga this weekend thanks to a comfortable 3-1 win at home to Zaragoza, coupled with FC Barcelona's failure to win away at Villarreal on Saturday night

发表于:2019-02-17 / 阅读(113) / 评论(0)

英语新闻

Ugandan vice president to lead delegation to 2012 London Olympics

KAMPALA, July 12 (Xinhua) -- Uganda's Vice President Edward Ssekandi will lead the country's delegation to the 2012 London Olympics as a way of morale boosting the team to win medals. Dennis Galabuzi, the Uganda Olympic Committee (UOC) vice president

发表于:2019-02-17 / 阅读(88) / 评论(0)

英语新闻

"Hawthorn Tree" girl to lead Stanley Kwan's film

BEIJING, March 25 (Xinhuanet) -- Zhou Dongyu, the starlet in Zhang Yimou's drama Under the Hawthorn Tree, has been cast as a lead for Stanley Kwan's upcoming romantic film, Ta De Guo (His Kingdom), according to the Guangzhou Daily. The newspaper cite

发表于:2019-02-19 / 阅读(320) / 评论(0)

英语新闻

Mario Monti to Lead Italy's New Government

Italian Prime Minister-designate Mario Monti, a former top EU commissioner, has been asked by the country's president to form a new government. The move comes a day after Prime Minister Silvio Berlusconi's resignation, following international financi

发表于:2019-02-19 / 阅读(97) / 评论(0)

英语新闻

英语听力—环球英语 1116 Poisoned by Lead

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 It was a medical mystery. In sever

发表于:2019-02-21 / 阅读(108) / 评论(0)

环球英语 Spotlight

Real Madrid keep lead at Spanish Primera Liga table

MADRID, March 4 (Xinhua) -- Real Madrid retain their 10 point lead at the top of the BBVA Primera Liga after the 25th round of matches thanks to a comfortable 5-0 win at home to Espanyol on Sunday. Espanyol have traditionally been easy victims for Ma

发表于:2019-02-25 / 阅读(136) / 评论(0)

英语新闻

英语听力—环球英语 1487 Poisoned by Lead

发表于:2019-03-15 / 阅读(256) / 评论(0)

环球英语 Spotlight

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