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
How can I refuse when you look at me like that?
你那样子看我，叫我怎么拒绝啊？
I don't know what to say. I'd like to replace it.
我不知说什么好。我赔一个新的给你。
Pretending to speak seriously, one of the workmen asked if he might make a telephone call before being taken to the station.
其中一个工人装模作样地问道，在被带往警察局之前，是否可以打一个电话。