牙齿的英文为tooth，它的复数形式为teeth。tooth可作名词和动词，作为名词时，中文翻译为“牙”、“齿”、“齿状部分”；作为动词时，中文翻译为“给……装齿”、“啮合”。
tooth的基本含义及用法介绍
1、tooth可作名词，意为牙;齿;齿状部分。可作可数名词，也可作不可数名词，复数形式为teeth。
例句：I've just had a tooth out at the dentist's.
我刚在牙科诊所拔了一颗牙。
She answered through clenched teeth .
她咬牙切齿地回答。
The cat sank its teeth into his finger.
那只猫狠狠咬住了他的手指。
She had very pretty straight teeth...
她有一口漂亮整齐的牙齿。
The front cog has 44 teeth.
前齿轮有 44 个齿。
Many infants do not cut their first tooth until they are a year old.
很多婴儿到一岁大时才开始长牙。
There's a cavity in the boy's tooth.
这个男孩的牙上有一个洞。
Result Different tooth slope angle has different slope angel.
结果不同齿坡角上仿形刀痕迹倾斜角度不同。
2、tooth还可作动词，意为“给……装齿；啮合”。
例句：I pictured him with a little one on his knee, helping her write her first letter to the Tooth Fairy.
我想象着有一个小宝贝坐在他的膝上，他抱着她，帮她给牙齿仙女写第一封信。
