contrast color

详细解释:【建】 对比色, 对照色

例句：

A stain of a contrasting color used to color the components in a microscopic specimen that are not made visible by the principal stain.对比染色剂，对照染色剂一种对比颜色的染色剂，用来染制主染色剂染后显不出的显微术标本成分