Convexoconcave
[醫] 凸凹的
??? 情景例句
Compliments of the Watermill Inn. Watermill Inn
請客。
I've never heard that piece before.Who wrote it?
我從來沒聽過那樂章，那是誰寫的？
I learnt to drive in four weeks。
我四個星期就學會了開車。