tooth drop out

• 牙掉光

tooth drop out的用法和样例：

例句

1. Some old women and men grow bitter with age; the more their teeth drop out, the more biting they get.
   有些老太婆与老头子，随着年岁而变得脾气暴戾——牙齿掉得越多，越发咬得入骨。
2. One of her teeth dropped out.
   她掉了一颗牙。