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.
特工参与了间谍活动,收集有关敌人计划的信息。