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
It's quite lovely.
相当好看。
Caesar's wife must be above suspicion.
身为凯撒（罗马大将）妻，必须无可疑（指：与伟大的人物交往的人不可有秽名）。
We need our order number on the outside of each box.
我们需要每只箱子的外观都打上订购号码。