Backjoint
n. 石阶踏步背榫; 留槽待填
🗣️ 情景例句
By the way, I'm Richard.
噢，我忘了说，我叫Richard。
I'll work for the next 5 days.
我要工作5天（从明天算起）
The contents were disappointing.
箱内东西令人失望。