音标:英 [kə'rɒtənɒɪd]美 [kə'rɒtnˌɒɪd]
类胡萝卜素[化] 类胡萝卜素; 类叶红素
any of a class of highly unsaturated yellow to red pigments occurring in plants and animals
1. Say they're pink 'cause the shrimp they eat got some stuff called carotenoids in 'em.
据说火烈鸟的粉色 是因为 吃的虾子里有类胡萝卜素