pigment/ ˈpɪɡmənt/ n.

a substance that exists naturally in people, animals and plants and gives their skin, leaves,

etc.a particular colour色素

Most feathers contain just one or two dye-like pigments.

多数羽毛只有一两种类似染料的色素。

a coloured powder that is mixed with a liquid to produce paint, etc. 颜料

The Harvard Art Museums have more than 2500 pigment samples.

哈佛艺术博物馆里有2500种颜料样品。

短语：

natural pigment: 天然色素；天然颜料；天然食用色素

age pigment: 老年色素；老年斑；年龄色素

出处：头条号 @朱老师Julia