Concave function
[計] 凹函數
?? 詞語組成解析
concave
['k?n'keiv]
n. 凹面，成凹形;
adj. 凹的;
vt. 使成凹形;
??? 情景例句
Sure.
當然可以。
Life is not all beer and skittles.
人生并不全是吃喝玩樂。
When a thief was caught on the premises of large jewellery store on morning, the shop assistants must have found it impossible to resist the temptation to say 'it serves him right.
“他罪有應得。