Concave cutter
[机] 凹面铣刀
🧩 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
I have interviews until noon,
我从现在到中午， 有一系列的面谈，
Politically,the country is divided into fifty states.
这个国家政治地被划分成50个州。
Half an hour? That's too long! Is there a bus?
半小时？那太久了！有公共汽车吗？