一组天然存在的深色色素中的任何一种,尤其是存在于皮肤、毛发、毛皮和羽毛中的色素。
一组天然存在的深色色素中的任何一种,尤其是存在于皮肤、毛发、毛皮和羽毛中的色素。；不溶性色素,决定皮肤、鳞片和羽毛的颜色；黑色素；[化] 黑素
一组天然存在的深色色素中的任何一种,尤其是存在于皮肤、毛发、毛皮和羽毛中的色素。
Any of a group of naturally occurring dark pigments, especially the pigment found in skin, hair, fur, and feathers.
不溶性色素,决定皮肤、鳞片和羽毛的颜色
insoluble pigments that account for the color of e.g. skin and scales and feathers
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