答案

teeth

解析

“牙齿”的英文单词是“tooth”，例句：I have gone to the dentist to extract the bad tooth.我已到牙科医生那里把坏牙拔掉了。Have you brushed your teeth?你刷牙了吗？

扩展知识

teeth的双语例句

Draw the floss backwards and forwards between the teeth.

将牙线在齿间来回拉动。

The front cog has 44 teeth.

前齿轮有44个齿。

I need to have two teeth filled.

我有两颗牙要补。

Choose an essay topic that you can really get your teeth into.

选择一个你可以真正悉心钻研的论文题目。

A high proportion of five-year-olds have teeth in poor condition.

五岁儿童牙齿不健康的比例高。