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
I don't know what you are driving at.
我不知道你到底想说什么。
Confession is the first step to repentance.
悔罪先须认罪。
But I must ask my parents first. What time shall I come?
不过我必须先问问父母。我几点钟来呢？