espionage
🇺🇸
/ˈespiənɑːʒ/
🇬🇧
/ˈespiənɑːʒ/
the practice of spying or using spies to get secret information
The agent was involved in espionage, gathering information about the enemy's plans.
特工參與了間諜活動,收集有關敵人的計劃的信息。