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
to read to the students--their own children, really.
共同为学生们， 其实就是他们自己的孩子， 朗读
As you can see in this photo, we've retained the same style which was so popular in this old model.
正如你在这张图片上所看到的，同风格的这种旧型产品非常流行，我们保留了它。
but the took a long time to send them Meanwhile,
但过了好长时间不见他把数字寄来，