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
Thank you, Philip.
谢谢你， Philip。
History repeats itself.
历史本身常重演。
It is well known that where the white man has invaded a primitive culture,
众所周知，凡是白人侵入原始文化的地方，