counterespionage

coun ter es pi o nage |ˌkountərˈespēəˌnäZH, -ˌnäj ˌkaʊntərˈɛspiənɑʒ | ▶noun activities designed to prevent or thwart spying by an enemy.

counterespionage

c ò unter é spion à ge 名詞 U (敵のスパイ活動に対する )反スパイ活動, 逆スパイ活動 .