As far back as the 4th century BCE, the Ancient Greeks treated lead to make the brilliant white pigment we know today.

早在公元前 4 世纪，古希腊人就对铅进行处理， 制成了我们今天所知的亮白色颜料。

Each sheet contains millions of microcapsules, about as wide as a human hair, filled with negatively-charged white pigments and positively-charged black pigments.

每张纸包含数百万个微胶囊，大约与人的头发一样宽， 充满带负电的白色颜料和带正电的黑色颜料。

The judge said Mr. Liu had been motivated by greed when he sold the technology needed to make a white pigment used in a list of everyday products.

法官称刘出自贪婪，将制造多种日常用品所需的一种白色颜料所需技术卖出。