牙齿用英语表示为 "teeth"，来源于日耳曼语。

例句：

I brush my teeth every morning. (我每天早上刷牙。)

She has a beautiful smile with white teeth. (她有一个美丽的笑容，牙齿白白的。)

He has a cavity in one of his back teeth. (他的后牙有一个蛀牙。)