Fall-out ratio误检率
downwind fall-out顺风落尘
tropospheric fall-out对流层沉降
upwind fall-out上风落尘
global fall-out全球性散落
local fall-out区域落尘
cloth fall-out坯布脱套
fall-out protection失步保护
fall-out sediment可沉降物
PHRASAL VERB（动词词组） If something such as a person's hair or a tooth falls out, it comes out. 脱落
Her hair started falling out as a result of radiation treatment.
她的头发因放射治疗而开始脱落。
PHRASAL VERB（动词词组） If you fall out with someone, you have an argument and stop being friendly with them. You can also say that two people fall out. 闹翻
She fell out with her husband.
她与丈夫闹翻了。
（） → see also fallout