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
What, Harry?
什么 ，Harry？
Brave actions never want a trumpet.
勇敢的行为不须要吹号。
Then you'll see the sign for the rest rooms.
你就可以看到厕所的牌子了。