intelligence activities concerned with identifying and counteracting the threat to security posed by hostile intelligence organizations or by individuals engaged in espionage or sabotage or subversion or terrorism
例句
用作名词 (n.)
Within months he was being trained in counterintelligence. 后来的几个月,他一直接受反情报训练。
Most of the unit's soldiers are tactical counterintelligence agents. 这支部队的大多数士兵都是手段高明的反情报特工。
Counterintelligence seeks to nullify the enemy's espionage efforts 反间谍活动目的是挫败敌人的间谍活动。