音标：[,hæfni'fluәraid] ；

氟铪酸盐, 氟铪化合物

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(191) / 评论(0)

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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

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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(178) / 评论(0)

口腔临床英语对话

早安英文第402期:笑点是不是haha point?

形容某个人笑点低 someone is amused easily 就是控制不住想要笑 I feel I have an uncontrollable urge to laugh ! 没get到笑点时： What's so funny, I don't get it. 幽默的人： humorous hilarious entertaining too funny for words M

发表于:2018-12-28 / 阅读(161) / 评论(0)

早安英文

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

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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

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百听不厌的好歌Sorry Seems To Be The harde.. Elton John Blue: Sorry seems to be the hardest word What I got to do to make you love me What I got to do to make you care What do I do when lightning strikes me And I wake to find that you're not th

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打榜热歌：3OH!3 ft.Ke$ha - My First Kiss 3OH!3,一只新晋的rap rock风格乐队；Ke$ha，电音大行其道的今天又一个来势汹汹的新生女星。两个都有怪怪的名字，不知道合作的歌曲是什么味道的？这首My Fi

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流行英文歌曲

流行歌曲：打榜热歌 3OH!3 ft.Ke$ha - My First Kiss

发表于:2019-02-11 / 阅读(149) / 评论(0)

经典英文歌曲

Who Was Harrret Tutman Chapter 1

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到听力原文收集区，您将会获得10到30积分的奖励! Thank you！

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名人认知系列 Who Was

Who Was Harrret Tutman

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名人认知系列 Who Was

儿童英语读物《神奇树屋》第十一册 Lions at Lunchtime 05 Ha-Ha

Oh, no! No! No! Shouted Annie. She raced down the bank, until she reached asandy, clear spot. Here! Here! she called. The wildebeests followed her with their wild eyes. Jack watched in disbelief as the swimmers changedtheir course. Slowly, all the wi

发表于:2019-02-17 / 阅读(165) / 评论(0)

汪培珽儿童英文分级书单《神奇树屋》

Who Was Harrret Tutman Chapter 2

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名人认知系列 Who Was

Who Was Harrret Tutman Chapter 7

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名人认知系列 Who Was

Who Was Harrret Tutman Chapter 6

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名人认知系列 Who Was

Who Was Harrret Tutman Chapter 5

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名人认知系列 Who Was

Who Was Harrret Tutman Chapter 4

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名人认知系列 Who Was

Who Was Harrret Tutman Chapter 3

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atmospheric concentration

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