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例句与用法:

1. 牙医检查了她的牙，未见有龋齿。
   The dentist could detect no decay in her teeth.
2. 有些人睡觉时磨牙齿。
   Some people grind their teeth while they are asleep.
3. 我牙疼，因为我的一颗牙齿上有个洞。
   I have a toothache because there is a cavity in one of my teeth.
4. 我拿起一张宣传保护牙齿的传单。
   I pick up a leaflet about the care of teeth.
5. 他的牙齿冷得直打颤。
   His teeth chattered uncontrollably because of the cold.
6. 我咬牙切齿愤怒已极。
   I was gnashing my teeth with rage.
7. 他正用一根牙签剔除牙齿间的饭渣。
   He is removing bits of food stuck between the teeth with a toothpick.
8. 狗露出了牙齿。
   The dog bared its teeth.

(Source: dict.cn)