Backjoint
n. 石阶踏步背榫; 留槽待填
🗣️ 情景例句
I have a call to make.
我需要打个电话。
Remember me to your father please.
请替我问候你的父亲。
The people performing all play different instruments and three of them sing too.
参加演出的人都要演奏不同的乐器，其中三位也演唱。