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 really mean it.
当然是真的。
I'm on my way.
我这就上路。
But of course, he can learn by himself. He has a book and a dictionary.
但当然，他也可以自学。他有书和词典。