clouded yellow
noun
1- a migratory Old World butterfly which has yellowish wings with black margins黑缘豆粉蝶。
1.1
- Genus Colias, family Pieridae: several species, in particular C. croceus.豆粉蝶属, 粉蝶科：数种, 尤指镉黄豆粉蝶。