愉悦口语:第168期 磨牙英文怎么说

ing-bottom: 55.56%;">

讲解文本：

grind one's teeth 磨牙
grind 磨，碾
Some people grind their teeth while they are asleep.
有些人睡觉时磨牙齿。
My roommate Jack always grinds his teeth in his sleep, which is a totally disaster.
我室友Jack喜欢睡觉磨牙，这对我就是个灾难。

疯狂练习吧！