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
It's no use crying over spilt milk. What's done cannot be undone.
覆水难收。
Do you usually play baseball on the weekend?
你通常在周末打棒球吗？
Sir Johan Hawkwood arrived in Italy with a band of soldiers and settled near Florence.
约翰。霍克伍德爵士带着一队士兵来到意大利，在佛罗伦萨附近驻扎下来，