Concavities
n. 凹面, 成凹形( concavity的名词复数 )
🗣️ 情景例句
I know the company well. It's big.
这家公司我很清楚。是大公司。
Love understands love; it needs no talk.
爱情可以意会，无需言传。
This was more than we could bear, so we decided to spend our last day exploring the countryside.
人多得使我们难以忍受，于是我们决定利用最后一天去乡间一游。