Concavoconcave
[医] 对凹的, 双凹的
🗣️ 情景例句
For a year or two
在一两年内
What are you looking at? Never seen this before.
看什么看？没看过啊！
Apparently, there is a good deal of truth in this idea.
显然，这种说法里面包含着许多真实性。