(noun.) (military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors.
(noun.) a secret watcher; someone who secretly watches other people; 'my spies tell me that you had a good time last night'.
(verb.) secretly collect sensitive or classified information; engage in espionage; 'spy for the Russians'.
(verb.) watch, observe, or inquire secretly.
(verb.) catch sight of; to perceive with the eyes; 'he caught sight of the king's men coming over the ridge'.
手打:朱迪
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