sunny小波
蛀牙: 1. cariosity2. decayed tooth Tooth decay; urban decay.蛀牙；城市的衰落I have three cavities.我有三颗蛀牙。I think I have a cavity.我想我有蛀牙。Brushing your teeth regularly helps to ward off tooth decay.按时刷牙有助于预防蛀牙。My bad tooth worries me.我的蛀牙使我痛苦。Yes, you have a big cavity there.你有一个大大的蛀牙洞。He had a bad tooth pulled out yesterday.昨天他把蛀牙给拔掉了。Sugar can decay the teeth.糖能蛀蚀牙。Decay of a bone or tooth, especially dental caries.骨头腐烂，牙蛀蚀骨头或牙齿的腐烂，尤指牙蛀蚀A pitted area in a tooth caused by caries.蛀洞因龋齿引起的牙内蛀洞区
subluevoyage
“蛀牙”和“齵齿”如果指的是一种疾病，是一个意思，tooth decay。如果指的是牙齿类型，那么是从cavity/decayed tooth(teeth）其他牙科词汇：tooth extraction 拔牙tooth implantation 植牙
哇塞小熊
你好蛀牙的英语单词是decayed tooth, 这是单数形式, decayed是形容词, 在这里表示虫蛀的, 修饰名词tooth (牙齿)。因为牙齿的英语单词是可数名词, tooth是单数, 它的复数形式是 teeth. 所以蛀牙也是可数名词, 形容词decayed不变,只变化tooth, 复数是teeth.蛀牙的英语表达, 单数是decayed tooth, 比如 a decayed tooth. 复数是decayed teeth, 表示不止一颗蛀牙。希采纳！
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