Concave function
[计] 凹函数
🧩 词语组成解析
concave
['kɔn'keiv]
n. 凹面，成凹形;
adj. 凹的;
vt. 使成凹形;
🗣️ 情景例句
We have another appointment on the same day.
我们那天有另外一个约会。
He who makes constant complaint gets little compassion.
经常诉苦抱怨，难以博得同情。
This is a moving spectacle, for crowds of people stand on the shore watching the lanterns drifting away until they can be seen no more.
这是一个感人的场面，人们成群地伫立在海岸上，注视着灯笼远去，直到再也看不见为止。