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
You're a real Stewart.
你是个真正的Stewart家后代。
I asked him to buy it for me, but he wouldn't.
我请他帮我买，但是他不肯。
For lunch I had noodles, salad and later a peach.
午餐我吃了面条、色拉，后来还吃了只桃子。