a decayed tooth

• 龋齿； 蛀牙

a decayed tooth的用法和样例：

例句

1. Proper dental care can prevent tooth decay.
   适当注意牙齿卫生可以防止龋齿。
2. The advice was not restricted to the prevention of tooth decay.
   这个忠告并不仅仅局限于预防龋齿。
3. I had a bad tooth pulled out yesterday.
   我昨天拔了一只蛀牙。
4. Yes, you have a big cavity there.
   你有一个大大的蛀牙洞。