spy1/spaI; spaI/n [C] plural spies someone whose job is to find out secret information about a country or organization 间谍﹐特务
spy2v spied , spying , spies 1 [I] secretly to get information for a government or organization 从事间谍活动﹐秘密收集情报2 [T] literary suddenly to see someone or something【文】突然看见[发现]: Ellen spied her friend in the crowd. 埃伦突然在人群里看到了她的朋友。 —spying n [U]: He was arrested for spying. 他因从事间谍活动被捕。spy on sbphr v to secretly watch someone 监视﹐窥探〔某人〕