espionage

英文解釋：

名詞 espionage:

1. the systematic use of spies to get military or political secrets

例句：

1. He was caught in the very act of espionage.
   他正在乾間諜活動時被抓住了。
2. Marked by melodramatic intrigue and often espionage.
   間諜的，驚險的以戲劇性的陰謀為特徵的，常常指間諜活動
3. The episode could reasonably serve as a unique epic of royal espionage!
   這一事件理所當然地堪稱是國王間諜活動的的獨一無二的史詩。