toothspasm

例句：

1. 1. She was in a toothspasm when she tried to eat.
   她尝试吃东西时牙关紧闭。
2. 2. The dentist told her that she had a toothspasm.
   牙医告诉她她有牙关紧闭的问题。
3. 3.He had a toothspasm during the night and couldn't sleep.
   他在晚上牙关紧闭，无法入睡。