单词：cesium sillcofluoride
单词：cesium sillcofluoride 相关文章
本曲大意 这首歌是一位女孩对她所住的环境所做的礼赞。想想，如果我们住的地方也像那样子的话，那该有多好！ 英文歌词 When the sun in the morning peeps over the hill, and kisses the roses round my window sill, then my heart fills with gladness when I hear
赖世雄精讲英文歌曲
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
Scientific American(十二)月
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
科技之光
[00:06.37]The United States has a new official clock. [00:10.95]The clock began operating late last year in the American city of Boulder,Colorado. [00:18.39]Experts say the new clock is so exact that it will neither gain nor lose so much as one secon
美国英语听力80篇
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
口腔临床英语对话
Youve given some thought to oxygen, carbon, uranium. But youve probably never mused about the element ytterbium, symbol Yb. A new study by scientists at the National Institute of Standards and Technology, or NIST, says that ytterbium could find a rol
Scientific American(八)月
She moved in to the house next door 她搬到隔壁的房子里 Said she'd never been in love before 说她从来没有谈过恋爱 Tried the best she could to hide herself away 试着最好的把自己隐藏起来 But every time she turned the light
音乐天堂
She moved in to the house next door Said she'd never been in love before Tried the best she could to hide herself away But every time she turned the lights down low He thought he heard a voice calling out so slow Come and take me away from all this p
英文好歌推荐-百听不厌的英文歌曲
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
VOA标准英语2010年(十)月
MICHEL MARTIN, HOST: Let's head to the other side of the country now. In Washington state, a member of the Nooksack Indian Tribe wants to change how you think about Native American art. Louie Gong is an artist and entrepreneur, and he wants to move p
2017年NPR美国国家公共电台7月
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
2018年科学美国人1月
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
科技之光
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
英语单词荟萃