Concavoconvex
[医] 凹凸的
🗣️ 情景例句
of forty-three years of on-the-job training.
关于我四十三年的工作经历。
He has a cup.
他有一只杯子。
Fortunately, we could see where we were going。
幸好我们能辨认我们要走的方向。