teeth
英 [tiːθ] 美 [tiːθ]
tooth 的复数
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。
tooth
英 [tuːθ] 美 [tuːθ]
n.牙;齿;齿状部分
复数： teeth
例句：
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。
When did she cut her first tooth?
她什么时候长出的第一颗牙?
