膽綠素

biliverdin

raw silk / white / plain, unadorned / vegetarian (food) / essence / nature / element / constituent / usually / always / ever

gall bladder / courage / guts / gall / inner container (e.g. bladder of a football, inner container of a thermos)

green / (slang) (derived from 綠帽子|绿帽子[lü4 mao4 zi5]) to cheat on (one's spouse or boyfriend or girlfriend)