yellow rain

yellow-rain的词性：
n.（名词）

1. A powdery, poisonous, yellow substance reported as dropping from the air in southeast Asia and found to be the excrement of wild honeybees contaminated by a fungal toxin.
黄雨：据说在东南亚从空中落下的一种粉质的有毒黄色物质，而且被发现是被真菌毒素污染的野蜜蜂的排泄物