单词：intermediate fluoride
单词：intermediate fluoride 相关文章
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
雅思词汇:冬奥会的冰雪项目 冬天来临，北方好多地方都开启了大雪模式，和小编一起来盘点冬奥会的冰雪项目吧! 冰上项目5个大项： 速度滑冰 Speed skating 【Speed skating】 is a competitive form of i
雅思英语
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
A: Hi. Can I help you with anything? B: Yeah. Can I look at this ring? A: Sure. Let me get it out for you. What is your size? B: I believe I am a six. A: Here you go. B: Would you have any necklace that would go well with this? A: Actually, we have a
中级-Intermediate Listening
你的手表真好看，和你的戒指很搭啊。结婚戒指吗？不，是订婚戒指。什么时候结婚，6月份。手表很贵吧。嗯，1500美元。 A: What a beautiful watch. It goes very well with your ring. B: Thank you. A: Is that yo
中级-Intermediate Listening
A: Where is your dressing room? B: Right over there. Person A comes out of the dressing room B: How did you like the sweater? A: I loved it. I'll take it. B: Great. I can ring you up over here. It comes to $87.04. A: Here you go? B: Do you have a cre
中级-Intermediate Listening
A: Hey Jackie. What are you doing? B: Nothing much. I'm just relaxing today. Why? What's going on? A: I was thinking about heading to the mall. Do you want to go? B: Are they having a sale? A: Yeah. Both Bon and Nordstrom's is having there annual sal
中级-Intermediate Listening
Immigrants Learn Nursing Skills as They Learn English Many jobs in the United States can be outsourced, or done by workers in other countries. Much of the clothing sold in the U.S. is made in other countries, for example. One job that cannot be outso
2016年VOA慢速英语(八)月
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
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
A: Do you drink much? B: Depending on what you consider a lot. A: How frequently do you drink? B: Couple times a week. How about you? A: Only when I go out. I'm not a big drinker. B: How much can you drink? A: I usually only have 2 beers. B: You're a
中级-Intermediate Listening
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
Oil prices on both side of the Atlantic have pushed above $50 a barrel for the first time this year as investors weigh the impact of supply disruptions and US figures showing a decline in crude inventories. 大西洋两岸的石油价格今年以来首
英语新闻
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
BEIJING, July 30 (Xinhua) -- China's railway courts are now being integrated into civilian courts as part of reforms that are intended to help build a unified judicial system. Railway courts handle criminal and civil cases concerning railway transpor
英语新闻
I Need You Tonight Professor Green ft.Ed Drewett (Hello?) Hello babe, what's happening, you cool? (Ah yeah you alright? What's happening?) Yeah I'm good, what's goin' on? (Yeah, nothing er chillin') Alright, what you up to later? (Oh yeah about that,
好听的英文歌曲
实用口语：滑雪Skiing SUE: I'm kind of nervous about this. JOHN: Why? SUE: What if I go off a cliff? JOHN: Don't worry about that. It's impossible. All the ski runs are carefully marked. And if there is something that might be dangerous, like a
实用英语
A: Hey Matt. I just got a job at a consulting firm. B: Congratulations. That's great! A: I'm so happy. I don't have to worry about finding a job and interviewing anymore. B: When do you start? A: I start next Monday. B: You're going to have to put in
中级-Intermediate Listening