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
We've earned it. What do you say?
我们有这样做的权利。你说呢？
Whom will you go out with?
你将和谁出去？
No, not that one. The red one.
不，不是那本。是那本红皮的。