tooth; teeth(plural)

• 咬紧牙齿

  grind one's teeth

• 露出牙齿

  show one's teeth

• 牙齿锋利

  the fangs are sharp

• 牙齿有蛀洞

  the tooth has a cavity

• 他牙齿咬得咯咯响，气得说不出话来

  he is grinding his teeth loudly from being choked with anger

• 牙齿摇动了

  the tooth has started to wobble

• 牙齿全脱落了

  teeth have all fallen out

• 牙齿长出来了

  the tooth has grown

• 冻得牙齿打战

  so cold one's teeth are chattering