N-UNCOUNT [oft NOUN n]反情报行动;反间谍活动Counter-intelligence consists of actions that a country takes in order to find out whether another country is spying on it and to prevent it from doing so. 反情报行动;反间谍活动
...the FBI's department of counter-intelligence.
美国联邦调查局反间谍处
...a counter-intelligence officer.
反情报官员
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