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
A little over two hours.
两个钟头多一点。
Call information for the number.
打查号台查询电话号码。
French test are awful, aren't they?
法语太可怕了，你说呢？