棘齿

例句：

1. 1. The dog's sharp teeth were a threat to the other animals in the forest.
   这只狗的尖锐牙齿威胁到了森林里其他动物的安全。
2. 2. The hunter had to remove his sharp teeth before he could approach the deer.
   猎人在接近鹿之前必须拔掉他的尖锐牙齿。
3. 3. The dentist advised him to have his sharp teeth professionally cleaned.
   牙医建议他去找专业人士清理他的尖锐牙齿。