名词
中文翻译：牙齿脱落
同义词：
['Teeth fall out', 'tooth loss例句：1. The old man lost his teeth when he was young.（这位老人年轻时掉了牙。）']
例句：
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1. The old man lost his teeth when he was young.
这位老人年轻时掉了牙。
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2.She had her wisdom teeth extracted last week.
她上周拔了智齿。
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3.He has been experiencing tooth pain for the past few days.
他过去几天一直有牙齿疼痛。