supernumerary teeth

例句：

1. 1. She had to have her extra teeth removed.
   她不得不拔除她的额外牙齿。
2. 2. The dentist advised him to get his supernumerary teeth fixed.
   牙医建议他修理他的额外牙齿。
3. 3.He was surprised when he found out that he had supernumerary teeth.
   当他发现他有额外牙齿时，他很惊讶。