| 单词 | spy | 
| 释义 | Word Frequency spy(spaɪ) nounWord forms:  plural spies 1.  a person employed by a state or institution to obtain secret information from rival countries, organizations, companies, etc 2.  a person who keeps secret watch on others 3.  obsolete a close view  verbWord forms: spies, spying or spied 4. (intransitive; usually foll by on) to keep a secret or furtive watch (on) 5. (intransitive) to engage in espionage  6. (transitive) to catch sight of; descry  Word origin C13 spien, from Old French espier, of Germanic origin; related to Old High German spehōn, Middle Dutch spien | 
	
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