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
Yes. That would be much better.
行，那样也好。
Many a good father hath but a bad son.
好父亲偏生不肖子。
So how did you get into the castle?
那么，你是怎么混入城堡的呢？