Concavities
n. 凹面, 成凹形( concavity的名词复数 )
🗣️ 情景例句
Oh, thank you!
噢， 谢谢你！
I meet the boy whose aunt is a reporter.
我遇到那个男孩的姑妈是记者。
My friend, Hugh, has always been fat, but things got so bad recently that he decided to go on a diet.
我的朋友休一直很胖，但是近来情况变得越发糟糕，以致他决定节食。