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 cross that bridge till you come to it.
没到河边，先别操心怎么过桥。
The lion is known by his claws (paw).
狮以爪闻名。
If you would only try, you could do it.
只要你肯尝试，你一定能做这件事。