Copper refining
[建] 铜(之)精炼
🧩 词语组成解析
copper
['kɑpɚ]
n. 铜;铜币;紫铜色;警察;
adj. 铜制的;
vt. 镀铜;
[计] 精炼, 提纯\\n[化] 精炼; 精制; 提炼; 匀料; 匀浆
🗣️ 情景例句
It's good that you went back.
你回去是对的。
Music is his chief hobby.
音乐是他的主要业余爱好。
but rarely with bicycles made for two.
不过双人自行车则不容易看到。