释义 |
phrasespy on/upon ! Spy upon is more formal than spy on, and is mostly used in writing. spy on/upon sb/sth to watch someone or something secretly in order to get more information about them: Carey spied on US diplomats and military officials in Berlin. 'Harriet the Spy'' is a popular children's novel about an 11-year-old girl who spies on her friends and neighbours.
|