counterespionage

/koun-ter-es-pee-uh-nahzh, -nij/US // ˌkaʊn tərˈɛs pi əˌnɑʒ, -nɪdʒ //UK // (ˌkaʊntərˈɛspɪəˌnɑːʒ) //

反间谍活动,反间谍,反间谍行为,反间谍行动

Definitions

n.名词 noun

They don't bother much with counterespionage, here, but they don't fool when it comes to countersabotage.
All thought of functioning in counterespionage against the Russians had moved into the back of his mind.
Allow me to introduce one of America's most effective counterespionage agents, Mr. Samson Narko!
One of the counterespionage sections was specialized and had only a responsibility for eliminating underground organizations.
Your Society is the most efficient espionage and counterespionage group in history, as far as I know.