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。