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
Don't forget about the bet.
别忘了打赌的事。
Custom rules the law.
习俗影响法律。
What's that, Jim? Is it a picture?
吉姆，那是什么？一张照片？