foreign agent 的近义词 26 个

• agent
• detective
• informer
• investigator
• mole
• operative
• secret agent
• secret service
• undercover agent
• emissary
• lookout
• observer
• patrol
• picket
• plant
• scout
• sleeper
• sleuth
• snoop
• spook
• spotter
• watcher
• double agent
• espionage agent
• inside agent
• intelligencer