Retropulpitis
逆行性牙髓炎
🗣️ 情景例句
Just because the other kids have motor scooters is no reason for you to stop riding your bike to school.
只是因为其他的孩子都有电单车上学，不足以成为你不骑车上学的理由。
I will die before I'll eat that carrot.
如果要我吃胡萝卜，我宁愿去死。
We don't have space in the warehouse for it.
我们仓库没有空位了。