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
What do you propose to do about it?
那你建议要怎么办？
What do you mean? not at all!
哪有？
When the bees came back to the hive, Von Frisch saw a curious sight.
当蜜蜂返回蜂箱时，冯·弗里施看到一个奇特的现象。