tooth复数为teeth,为不规则变化,其意思是牙齿、齿状部分,例如to clean your teeth刷牙、the teeth on a saw锯齿等。其常见词组搭配有tooth decay龋病、tooth enamel牙釉质、lose a tooth掉牙、pull a tooth拔牙、cut a tooth长出新牙等。
例句:1、The front cog has 44 teeth.
前齿轮有44个齿。
2、I need to have two teeth filled.
我有两颗牙要补。
3、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。
4、He laughed,revealing a line of white teeth.
他笑了起来,露出一排洁白的牙齿。
5、Dentists advise you to have your teeth checked every six months.
牙医建议大家每六个月检查一次牙齿。
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