Concave polyhedron
凹多面体
🧩 词语组成解析
concave
['kɔn'keiv]
n. 凹面，成凹形;
adj. 凹的;
vt. 使成凹形;
n. 多面体
🗣️ 情景例句
These days the police are just too soft on drug peddlers.
现在警察对于毒贩过于手软。
I understand that the majority of employees here are Chinese.
我听说雇员中的大多数是中国人。
From there, he hitchhiked to Paris in a lorry.
从那里他又搭上卡车到了巴黎。