单词：tooth surface
tooth surface的用法和样例：
例句
- A film of mucus and bacteria on a tooth surface.齿菌斑牙齿表面一层粘液和细菌的膜
单词：tooth surface 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
February 28 is National Tooth Fairy Day. This day celebrates one of childhoods make-believe visitors. Others include Santa Claus and the Easter Bunny. The Tooth Fairy comes in the middle of the night after a child loses a milk tooth. Parents tell the
英语课程学习计划和讲义
[00:09.33]For each dialogue,there is one question and four possible answers. [00:16.12]Choose the correct answer--A,B,C or D,and mark it in your test booklet. [00:27.30]You will have 15 seconds to answer the question [00:32.39]and you will hear each
全国公共英语等级考试三级
Ben's tooth Ben was eating an apple at school, ow! he said. Oh, look! My tooth has come outand here it is, in my apple! Ben went to show his teacher. Look, Mrs. Green, he said, My tooth has come out. Here's a little box to put it in, said Mrs, Green.
Cherry老师讲英文故事
Days of Painful Tooth Repair May Be Over From VOA Learning English, this is the Health Lifestyle report. Many people fear a visit to the dentist. They are not so much afraid of the doctor, but of the dental equipment and treatments. Well, fear no mor
2015年VOA慢速英语(九)月
Maxwell put up his hand and waited for his teacher, Mrs. Gilbert, to notice him. Do you have a question, Maxwell? she asked. Its more like a problem, Maxwell said. I lost my tooth. Maxwell stood up and held out his hand to show his class his baby too
Children’s Stories-儿童故事集
Flawless pearls are among the most symmetrical spheres biological organs. But do they get so round? Turns out they turn. Pearls and mollusks such as oysters create so-called pearls acs around intrusive pieces of grit. The sac coat the yelten with the
Scientific American(六)月
a tooth pulled A man and his wife entered the dentist's office. The man said, I want a tooth pulled. We're in a big hurry, so forget about any pain killers. The dentist said，You're very brave. Which tooth is it? The man said to his wife, Show him y
英语笑话（MP3+文本）
释义： Long：长的，tooth：牙齿；字面来看呢，long in the tooth是牙齿长的意思； In english：Old in age. Mostly used when referring to people or horses.英文里指的是年纪大，一般指的是人或者一匹马； 来源：
英语俚语天天说
He dreamed that one of his teeth had fallen out. He told his classmate. She said, In my country, such a dream means a relative is going to die soon. He asked, Really? Any particular relative? She said, Yes. It depends on which tooth falls out. He sai
英文短篇故事（纽约）
New York City's mayor is against smoking. Stores that sell cigarettes must display big anti-smoking ads. One ad shows a decayed tooth. The ad says, Smoking Causes Tooth Decay. Quit Smoking Today. Call 311 or 1-866-NYQUITS. Store owners are upset. The
原版英语小短文
Primitive peoples believe that hair, nail clippings, and lost teeth remain magically linked to the owner even after they have been disconnected from his body. As any voodoo artist will tell you, if yo
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LOS ANGELES, June 18 (Xinhua) -- Microsoft Corp. unveiled Monday a family of tablets dubbed Surface, built on Windows 8, at an event in Los Angeles. Microsoft Chief Executive Steve Ballmer introduced the company's Surface family of tablets. The devic
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