一、英语：teeth; tooth; cusp; armature; dens
二、双语例句：
1
我的一个牙齿松动了。
I have a loose tooth.
2
牙齿和牙龈之间会滋生牙斑。
Deposits of plaque build up between the tooth and the gum.
3
你哪一颗牙齿痛?
Which tooth pains you?
4
每天两次彻底刷净牙齿和牙龈。
Thoroughly brush teeth and gums twice daily.
5
你可以得到免费的牙齿治疗。
You can get free dental treatment.
6
如果有一颗牙齿很松，牙医可能会建议你把它拔掉。
If a tooth feels very loose, your dentist may recommend that it's taken out.
7
我用舌头可以舔到我牙齿中的缝。
I can feel the crack in my tooth with my tongue.
8
某些食物会在牙齿上留下污渍，吸烟当然也会。
Some foods can stain the teeth, as of course can smoking.
9
牙齿上的空洞是由龋蚀造成的。
Cavities in teeth are caused by decay.
10
对我们的骨骼和牙齿有好处。
Is good for our bones and teeth.
11
他的牙齿洁白而整齐，十分好看。
He had nice square white teeth.
12
那个军官咧开嘴，露出洁白整齐的牙齿。
The officer's mouth opened, showing white, even teeth.
13
你的牙齿怎么了?
What's wrong with your tooth?
14
受过重击的牙齿可能会变色。
A tooth which has been hit hard may discolour.
15
它猛地朝我的脚脖子咬下去，牙齿还咔咔直响。
His teeth clicked as he snapped at my ankle.
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