n.反情报；反间谍活动
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。
