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
How many stamps do I need?
我需要多少邮票？
Did you go to the party yesterday?
你昨天去参加聚会了吗？
The noise had been so faint that no one though that the ship had been damaged.
由于这个声音非常轻，没人会想到船身已遭损坏。