氟化玻璃;氟化物玻璃

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

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Scientific American(十二)月

哈利波特与魔法石04-The vanishing glass

CHAPTER TWO THE VANISHING GLASS Nearly ten years had passed since the Dursleys had woken up to find their nephew on the front step, but Privet Drive had hardly changed at all. The sun rose on the same tidy front gardens and lit up the brass number f

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哈利波特与魔法石

英语博客：Glass Blowing.

It's the best place in Wenatchee, I said to my husband, as I described the new Pybus Market. This all-year-round(1) shopping center and farmer's market is the latest addition(2) to Wenatchee. It is a real step forward for this town which, up until no

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英语博客 A cup of English

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

AMERICAN MOSAIC - In Corning New York: A House of Glass

AMERICAN MOSAIC - In Corning New York: A House of Glass By Nancy Steinbach, Nana Demange and Shelley Gollust Broadcast: Friday, September 16, 2005 (THEME) HOST: Welcome to AMERICAN MOSAIC, in VOA Spec

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American Mosaic

VOA标准英语2013--Privacy Concerns Raised About Google Glass Google Glass提出要关注隐私保护

Privacy Concerns Raised About Google Glass Google Glass提出要关注隐私保护洛杉矶谷歌的最新的高科技设备 Google Glass 因为隐私保护问题一直备受争议. When Professor Marcia Dawkins first heard about Google Glass, she h

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VOA标准英语2013年(七月)

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

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口腔临床英语对话

2007-10-16, Glass Harp - 酒杯竖琴

For centuries, Prague has been a center of art, and home to great composers. Dvorak, Chopin and Tchaikovsky performed their best works here. Inspired by this musical heritage is Alexander Zoltan, who plays a less traditional instrument - the glass ha

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国家地理2007年

每天一点英文 02 a glass of milk

02 a glass of milk One day, a poor boy who was trying to pay his way through school by selling goods door to door found that he only had one dime left. He was hungry so he decided to beg for a meal at the next house. However, he lost his nerve when a

发表于:2019-01-02 / 阅读(369) / 评论(0)

每天一点英文

Bring Me a Glass of Milk

At 2 a. m, Mrs. Culkin was convinced that she had heard a prowler in the living, room. Tiptoe down-stairs, she told her husband. Don' t turn on the lights. Sneak up him before he knows what's happeningDutifully Mr. Culkin put on his robe. Just as he

发表于:2019-01-07 / 阅读(146) / 评论(0)

趣味英语

Broken Glass Walkway Shatters Nerves in China

AS IT IS 2015-10-11 Broken Glass Walkway Shatters Nerves in China Imagine this. You are visiting a beautiful mountain somewhere in the countryside. Part of the trip takes you up a steep mountain cliff. At the top, visitors can step out on to a see-th

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2015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

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VOA标准英语2010年(十)月

英文歌曲：Conor Maynard - Glass Girl

How come everything that seems so good is really bad? How could it be that it was all just nothing that we had? You''re in denial, it''s done babe, it''s not working, It''s been a while so how come it''s not numb yet? This is hurting . Can''t hide it

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节奏布鲁斯

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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英语单词荟萃

影视歌曲：《行尸走肉》S03E01插曲 - Parting glass

《行尸走肉第三季》该季主要讲述了瑞克带领大家逃离农场后在一座监狱建立了营地，同时和总督布莱恩?布莱克进行斗争的故事。第一集中两只行尸在屋子里面行走，瑞克带领队友们冲进屋子

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英乐时空

放下玻璃杯 Put the glass down

A lecturer was giving a lecture to his student on stress management. He raised a glass of water and asked the audience, How heavy do you think this glass of water is? The students answers ranged from 20g to 500g. It does not matter on the absolute we

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阅读空间

英语歌曲:布鲁斯 Lil Eddie - Heart of Glass

节奏布鲁斯:Lil Eddie - Heart of Glass 相关介绍：以抒情RB为主打风格的Lil Eddie，成为歌手之前也先后为一众顶级歌星担任制作一职。近日推出的全新专辑《Already Yours》，便是Lil Eddie为自己特意度身

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节奏布鲁斯

天籁音乐:Raise Your Glass

P!nk，顶着亮丽的粉红色短发，今年携带新单曲Raise Your Glass归来，在榜单上的位置一路攀升，本周已经打入Billboard榜单第十位，而在这之前，也已经成为澳大利亚的冠军单曲。 Raise Your Glass P!

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天籁音乐

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