Premolar
n. 前臼齿\\n[医] 前磨牙, 双尖牙, 磨牙前的
🗣️ 情景例句
What is the most important thing for you to be happy?
你认为对你来说开心最重要的是什么？
I'd like two seats on today's northwest flight 7 to detroit, please.
我想订两张今天西北航空公司7班次到底特律的机票。
Hay had been cut and cowsheds had been cleaned.
干草已切好，牛棚也打扫干净了。