Concavoconcave
[医] 对凹的, 双凹的
🗣️ 情景例句
Who is that?
你是谁？
Lock the stable door before the steed is stolen.
马未偷走前，厩门先锁上。
Jasper has put up 'No Parking' signs outside his gate, but these have not had any effect.
贾斯珀曾把几块“禁止停车”的牌子挂在大门外边，但没有任何效果。