相关单词近义词 undercover work 秘密工作, espionage 间谍活动, eavesdropping 偷听, infiltration 浸润, spotting 确定准确位置..., detection 探测, catching 易传染的, espial 侦探临近词spy, spy agency, spy-boat, spygmogram, spy service, Spy Fiction, Spyckermann, spy-plane, spy upon sb, spy-master, spy into sth 返回 spying