copperas

n.绿矾

一种含铁硫酸盐，常用于染料和墨水的制备。

名词

1、Copperas is commonly used in the production of inks and dyes.
铜绿是常用于墨水和染料制备的。

2、The color of the fabric was achieved by treating it with copperas.
这种织物的颜色是用铜绿处理而成的。