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)

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(145) / 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(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

发表于:2019-01-14 / 阅读(161) / 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(150) / 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(153) / 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(146) / 评论(0)

英语单词荟萃

听歌学英语:Sorry Seems To Be The harde..

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

发表于:2019-02-07 / 阅读(149) / 评论(0)

听歌学英语

英语歌曲:3OH!3 ft.Ke$ha - My First Kiss

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

发表于:2019-02-08 / 阅读(147) / 评论(0)

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！

发表于:2019-02-13 / 阅读(129) / 评论(0)

名人认知系列 Who Was

Who Was Harrret Tutman

发表于:2019-02-13 / 阅读(152) / 评论(0)

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

发表于:2019-02-21 / 阅读(140) / 评论(0)

名人认知系列 Who Was

Who Was Harrret Tutman Chapter 7

发表于:2019-02-21 / 阅读(133) / 评论(0)

名人认知系列 Who Was

Who Was Harrret Tutman Chapter 6

发表于:2019-02-21 / 阅读(141) / 评论(0)

名人认知系列 Who Was

Who Was Harrret Tutman Chapter 5

发表于:2019-02-21 / 阅读(133) / 评论(0)

名人认知系列 Who Was

Who Was Harrret Tutman Chapter 4

发表于:2019-02-21 / 阅读(149) / 评论(0)

名人认知系列 Who Was

Who Was Harrret Tutman Chapter 3

发表于:2019-02-21 / 阅读(156) / 评论(0)

名人认知系列 Who Was

最新学习文章

热门学习文章

热门标签

英语听力 VOA标准英语 VOA 英语歌曲口语听力提高听力材料听力教程英语学习 NPR 英语口语 VOA慢速英语美国国家电台儿童英语 VOA英语小学英语 cnn VOA常速英语标准英语英文歌曲听电影学英语英语单词英文电影慢速英语 CRI 美联社新闻美国有线新闻加州分级澳洲新闻流行歌曲常速英语 ABC新闻快递疯狂英语英语读物听力棚车少年经济学人英语词汇商务英语 VOA双语新闻 BBC 中国电台大学英语 Treasures 加州语文 BBC英语英语听力网站 VOA英语教学词汇万花筒 SSS VOA英语听力 AP 新概念分级英语英语广播听力精选英语播客英文绘本 TED演讲赖世雄英语MP3 CCTV9英语新闻 lesson 英语新闻初中英语学英语英语语法历史上的今天英文广播剧英语游戏原版英语小说英语有声读物书虫英语牛津英语读物访谈录新闻一分钟考研英语英语每日在线听新闻 Us 新概念英语地道英语单词第二册自然百科高中英语 sports 实用英语 MP3听力辛沛沛 ESL英语第一册英语每日一句 unit 新东方 GRE 每日一词 BBC听力

学英语单词

association of american geographer

Avtag

Bankhart