名詞 fallout:

1. the radioactive particles that settle to the ground after a nuclear explosion
   同義詞：radioactive dust
2. any adverse and unwanted secondary effect
   同義詞：side effect

fall.out

n.（名詞）

The slow descent of minute particles of debris in the atmosphere following an explosion, especially the descent of radioactive debris after a nuclear explosion.
放射性粒子的沉降：爆炸后放射性粒子通過(guò)大氣緩慢下降，尤指核爆炸后放射性粒子的下降
The particles that descend in this fashion.
輻射塵：以這種方式落下的放射性粒子
An incidental result or side effect:
副作用或附帶結(jié)果：
例句：
.Other social trends also have psychiatric fallout, and the people who suffer can`t afford treatment.(Martha Farnsworth Riche)
.其它社會(huì)傾向同樣有精神病學(xué)的后遺癥，病人仍無(wú)法接受治療.(馬莎·法恩斯沃思·里什)