Premolar
n. 前臼齿\\n[医] 前磨牙, 双尖牙, 磨牙前的
🗣️ 情景例句
He worked his way through college.
他半工半读念完大学。
He wants to change his appointment from Monday to Wednesday.
他想要把他的约会从星期一改到星期三。
Very excited, the party dug a hole two feel deep.
队员们异常激动，就地挖了一个两英尺深的坑，