从以下词典查找：
历史：
spy, agent, agent provocateur, counterspy, double agent, secret agent:

These words all denote a person who secretly gathers information about persons or about countries other than his own, usually for destructive purposes. Spy is the most general term. In a narrow sense, a spy is one engaged in espionage ?that is, his is sent secretly into another country to obtain military or political information wanted by his own country. If captured, especially in time of war, a spy is subject to death by firing squad. In a wider sense the word is derogatory and is applied to one who uses underhand and furtive means to observe the activities of others, usually for personal gain: The director has spies in every department.

Agent and secret agent are now preferred to spy when signifying a person employed by a government to engage in espionage. An agent or secret agent enters a foreign country under a disguise and usually resides there for a time. His work is to learn the military secrets and other facts about that country which will be of use to his own government. An agent may also be sent within the borders of a belligerent power to commit acts of sabotage that will weaken the defences of the enemy. Agent or secret agent may be applied also to investigators within a government who probe into treasonable activities, counterfeiting and other infringements of the law: a Security Organization agent.

A counterspy is an agent who spies on the secret agents of the enemy, often within his own country, in order to thwart their activities and destroy their efficiency.

The double agent, or "double spy," is employed simultaneously by two opposing countries and engages in espionage against both of them while pretending to be working for only one. A double agent may actually be loyal to one country or he may practise deception towards both sides. Double agents often make effective counterspies.

Agent provocateur is a French term designating a spy who is planted in a trade union, political party or other organization in which there are conflicting loyalties. His method is to gain the trust of the members of the group and to stir them to actions or declarations that will incur punishment. Agent provocateur carries also a suggestion of opprobrium, since, unlike the espionage agent, the agent provocateur may be acting against and betraying his own kind.

SEE: OVERHEAR, SPECTATOR, STEALTHY.

spy
(once / 195 pages)

WORD FAMILY
counterspy: counterspies/spy: counterspy, spied, spies, spying/spying: spyings
USAGE EXAMPLES
Blacks did not trust the F.B.I. because they believed it had done little to protect their civil rights and it had spied on them.
New York Times(Jul 11, 2014)
As Merkel put it Thursday, the two countries have better things to do than “waste energy spying” on each other.
Seattle Times(Jul 11, 2014)
"Spying on allies ... is a waste of energy," the chancellor said in her most pointed public remarks yet on the issue.
Reuters(Jul 11, 2014)
But it must have been hard for him not to smile at the latest U.S. spying scandal this week.
Time(Jul 10, 2014)
He spied me & held out his Hands to me.
Literature(Jul 10, 2014)
1
n(military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors
Synonyms:
undercover agent
Examples:
Margarete Gertrud Zelle
Dutch dancer who was executed by the French as a German spy in World War I (1876-1917)
2
na secret watcher; someone who secretly watches other people
my spies tell me that you had a good time last night
3
vwatch, observe, or inquire secretly
Synonyms:
sleuth, snoop, stag
4
vcatch sight of; to perceive with the eyes
Synonyms:
sight
5
vcatch sight of
Synonyms:
descry, espy, spot
6
vsecretly collect sensitive or classified information; engage in espionage
spy for the Russians
spy

[noun]

1 = undercover agent, mole, nark (Brit., Austral., & N.Z. slang)

[verb]

2 = catch sight of, espy, glimpse, notice, observe, spot

spy
I
\\ˈspī\\ verb
(spied ; spy·ing)
 ETYMOLOGY  Middle English spien, from Anglo-French espier, of Germanic origin; akin to Old High German spehōn to spy; akin to Latin specere to look, look at, Greek skeptesthai & skopein to watch, look at, consider
 DATE  13th century
transitive verb
1. to watch secretly usually for hostile purposes
2. to catch sight of : see
3. to search or look for intensively — usually used with out
    spy out places fit for vending…goods — S. E. Morison
intransitive verb
1. to observe or search for something : look
2. to watch secretly as a spy

II
noun
(plural spies)
 DATE  13th century
1. one that spies:
  a. one who keeps secret watch on a person or thing to obtain information
  b. a person employed by one nation to secretly convey classified information of strategic importance to another nation; also : a person who conveys the trade secrets of one company to another
2. an act of spying

spy

noun
 
/spaɪ/
/spaɪ/
(plural spies)
jump to other results
  1. a person who tries to get secret information about another country, organization or person, especially somebody who is employed by a government or the police间谍；密探
    • He was denounced as a foreign spy.有人告发他是外国间谍。
    • a police spy警方密探
    • a spy plane/satellite (= used to watch the activities of the enemy)间谍飞机／卫星
    • Video spy cameras are being used in public places.隐蔽的摄像机在监视着公共场所。
    Extra Examples
    • Counter-intelligence officers uncovered a spy ring involving twenty agents.反情报官员发现了一个涉及 20 名特工的间谍网。
    • He denied acting as an enemy spy.他否认自己是敌方间谍。
    • He was a spy for the government.他是政府密探。
    • Soviet spies who had infiltrated the American government渗透进美国政府的苏联间谍
    • the director of a top American spy agency美国顶级间谍机构负责人
    • He became a government spy during the war.战争期间他为政府当间谍。
    • He worked as a British spy in Russia.他曾在俄罗斯担任英国间谍。
    Topics War and conflictc1, Jobsc1
    Oxford Collocations Dictionaryadjective
    • enemy
    • foreign
    • government
    • …
    … of spies
    • network
    verb + spy
    • act as
    • be
    • work as
    • …
    spy + verb
    • infiltrate
    spy + noun
    • film
    • movie
    • novel
    • …
    preposition
    • spy for
    See full entry
    Word OriginMiddle English: shortening of Old French espie ‘espying’, espier ‘espy’, of Germanic origin, from an Indo-European root shared by Latin specere ‘behold, look’.

spy

verb
 
/spaɪ/
/spaɪ/
Verb Forms
present simple I / you / we / they spy
/spaɪ/
/spaɪ/
he / she / it spies
/spaɪz/
/spaɪz/
past simple spied
/spaɪd/
/spaɪd/
past participle spied
/spaɪd/
/spaɪd/
-ing form spying
/ˈspaɪɪŋ/
/ˈspaɪɪŋ/
Idioms Phrasal Verbs
jump to other results
  1.  
    [intransitive] to collect secret information about another country, organization or person从事间谍活动；搜集情报
    • He spied for his government for more than ten years.他做过十多年的政府间谍。
    Topics War and conflictc1
  2. [transitive] spy somebody/something (literary or formal) to suddenly see or notice somebody/something突然看见；发现
    • In the distance we spied the Pacific for the first time.在远处，我们突然第一次看到了太平洋。
    3. Word OriginMiddle English: shortening of Old French espie ‘espying’, espier ‘espy’, of Germanic origin, from an Indo-European root shared by Latin specere ‘behold, look’.
Idioms
spy out the land
  1. to collect information before deciding what to do（事先）摸清情况，窥察虚实
spy

noun
the government had planted two spies in the organization
SECRET AGENT , undercover agent, enemy agent, foreign agent, secret service agent, intelligence agent, double agent, counterspy, industrial spy, fifth columnist, mole, plant, scout; control, handler; N. Amer. spook; informal snooper; archaic intelligencer; archaic, informal beagle.

verb
1 she spied some asparagus on a stall
NOTICE , observe, see, spot, sight, catch sight of, glimpse, catch/get a glimpse of, make out, discern, pick out, detect, have sight of; informal clap/lay/set eyes on; poetic/literary espy, behold, descry.

2 the couple were spied on by reporters
OBSERVE FURTIVELY , keep under surveillance, watch, keep a watch on, keep an eye on, keep under observation, follow, shadow, trail; informal tail; rare surveil.

3 he agreed to spy for the West
BE A SPY , be engaged in spying, gather intelligence, work for the secret service; informal snoop.
SPY
 INDEX
1. to spy
2. someone who spies
     • • •
 RELATED WORDS
to secretly watch someone: ⇨ WATCH (5)
see also
 ⇨ SECRET
 ⇨ FIND OUT
     • • •
1. to spy
■spy /spaɪ/ intransitive verb
  ▪ to secretly collect information about an enemy government:
  A former US diplomat has confessed to spying.
  spy on
  For years the satellite spied on secret weapon bases.
  spy for
  Philby had been spying for the Russians for several years.
  • spying uncountable noun
  The 11 men had allegedly been involved in spying.
  He had been accused of spying and held without trial for ten years.
■espionage /ˈespiənɑːʒ/ uncountable noun
  ▪ the collecting of political, military, or industrial secrets from another country or organization:
  Zakharov, a KGB agent, was charged with espionage.
  industrial espionage
  the collecting of secrets about a competing company
  The banks take precautions to prevent any attempts at industrial espionage while confidential documents are on the premises.
■be in the pay of /biː ɪn ðə ˈpeɪ ɒv/ verb phrase
  ▪ if someone is in the pay of a country or organization, they are being paid by that country or organization to spy for them:
  Before becoming President, the general was in the pay of the CIA.
  There were persistent rumours that the former head of British Intelligence was in the pay of the Soviet Union.
■infiltrate /ˈɪnfɪltreɪtǁɪnˈfɪltreɪt, ˈɪnfɪl-/ transitive verb
  ▪ to secretly join a group or organization whose principles or activities you strongly oppose, in order to find out more about them, or to harm them in some way:
  The Communists effectively infiltrated the government and the political parties.
  Police attempts to infiltrate neo-Nazi groups have been largely unsuccessful.
  Everyone knew the organization had been infiltrated by government agents, but could not prove it.
  • infiltrator countable noun
  There has always been a danger of enemy infiltrators in the organization.
  • infiltration /ˌɪnfɪlˈtreɪʃən/ uncountable noun
  Finally, weakened by infiltration and sabotage, Black Aid Action folded in 1967.
■counterespionage /ˌkaʊntərˈespiənɑːʒ/ uncountable noun
  ▪ the activity of trying to find out about and prevent an enemy from spying in your own country:
  His novels deal with the world of spies, espionage and counterespionage.
  the murder of two counterespionage officers

2. someone who spies
■spy /spaɪ/ countable noun
  He was suspected of having been a spy during the war.
  The job of the secret police was to hunt down spies and traitors.
■agent /ˈeɪdʒənt/ countable noun
  ▪ someone working for a government or police department who tries to get secret information about another country or organization:
  Wray was filmed passing money to an enemy agent.
  a book of memoirs written by a retired MI5 agent, Peter Wright
  secret agent
  He had been a secret agent of the enemy all along.
■mole /məʊl/ countable noun
  ▪ someone who works inside an organization who gives secret information to someone on the outside, for example a newspaper:
  The government suspects there is a mole who is leaking information to the press.
  The mole was discovered to be the 25-year-old secretary of the minister.
spy
see
 ⇨ SPY 1,2
spy noun | verb
 1 
spy / spaI ; spaI /noun (plural spies) C
1. someone whose job is to find out secret information about another country, organization, or group间谍;SYNsecret agent
British / Russian / foreign etc
•spy a Soviet spy苏联间谍
spy ring / network ( = an organized group of spies )间谍网
spy plane / satellite间谍飞机/卫星
 2 
spyverb
spied, spying, spies
1. Ito secretly collect information about an enemy country or an organization you are competing against从事间谍活动; 秘密收集情报:
[+ on ]
•He was charged with spying on British military bases.他被指控刺探英国军事基地情报。
[+ for ]
•He confessed to spying for North Korea.他招供了为北韩从事间谍活动。
2. Tliteraryto suddenly see someone or something, especially after searching for them〔尤指通过搜索后〕突然看见，突然发现;SYNspot
•Ellen suddenly spied her friend in the crowd.埃伦突然在人群中看到了她的朋友。
 PHRASAL VERBS 
spy on sb
to watch someone secretly in order to find out what they are doing监视，窥探:
•She sent you to spy on me, didn't she?她派你来监视我，对不对？
spy sth ↔ out
1. to secretly find out information about something暗中查明
2. spy out the land BrEto secretly find out more information about a situation before deciding what to do〔作决定前〕暗中摸清情况
spy ★★☆☆☆
1.N-COUNT 可数名词间谍 A spy is a person whose job is to find out secret information about another country or organization.

  • He was jailed for five years as an alleged British spy...

    他被指控为英国间谍，入狱关押了 5 年。

  • The spy ring passed secrets to the enemy.

    该间谍团伙向敌方传送秘密情报。

2.ADJ 形容词(卫星、飞机)执行间谍任务的 A spy satellite or spy plane obtains secret information about another country by taking photographs from the sky.

【搭配模式】：ADJ n
    3.VERB 动词从事间谍活动;充当间谍 Someone who spies for a country or organization tries to find out secret information about another country or organization.

    【语法信息】：V for n

    【语法信息】：V on n

    【语法信息】：V against n

    • The agent spied for East Germany for more than twenty years...

      该特工人员为东德做了 20 多年的间谍。

    • East and West are still spying on one another...

      东西方仍在互相进行间谍活动。

    • I never agreed to spy against the United States.

      我从来没有答应去当间谍刺探美国的情报。

    spying

    • ...a ten-year sentence for spying.

      因间谍罪判处的 10 年监禁

    4.VERB 动词秘密监视 If you spy on someone, you watch them secretly.

    【语法信息】：V on n

    • That day he spied on her while pretending to work on the shrubs...

      那天，他假装在修剪灌木，秘密对她进行监视。

    • He had his wife spied on for evidence in a divorce case.

      他请人秘密监视自己的妻子，为离婚案搜集证据。

    5.VERB 动词看见;发现 If you spy someone or something, you notice them.

    【语法信息】：V n

    【STYLE标签】：LITERARY 文

    • He was walking down the street when he spied an old friend.

      他正沿街走着，突然看见了一位老朋友。

    spy★★☆☆☆
    1[N-COUNT 可数名词] 间谍；A spy is a person whose job is to find out secret information about another country or organization.

    • He was jailed for five years as an alleged British spy...

      他被指控为英国间谍，入狱关押了 5 年。

    • The spy ring passed secrets to the enemy.

      该间谍团伙向敌方传送秘密情报。

    2[ADJ 形容词] (卫星、飞机)执行间谍任务的；A spy satellite or spy plane obtains secret information about another country by taking photographs from the sky. [ADJ n]
    3[VERB 动词] 从事间谍活动;充当间谍；Someone who spies for a country or organization tries to find out secret information about another country or organization. [V for n] [V on n] [V against n]

    • The agent spied for East Germany for more than twenty years...

      该特工人员为东德做了 20 多年的间谍。

    • East and West are still spying on one another...

      东西方仍在互相进行间谍活动。

    • I never agreed to spy against the United States.

      我从来没有答应去当间谍刺探美国的情报。

    spying

    • //...a ten-year sentence for spying.

      因间谍罪判处的 10 年监禁

    4[VERB 动词] 秘密监视；If you spy on someone, you watch them secretly. [V on n]

    • That day he spied on her while pretending to work on the shrubs...

      那天，他假装在修剪灌木，秘密对她进行监视。

    • He had his wife spied on for evidence in a divorce case.

      他请人秘密监视自己的妻子，为离婚案搜集证据。

    5[VERB 动词] 看见;发现；If you spy someone or something, you notice them. [V n] [LITERARY 文]

    • He was walking down the street when he spied an old friend.

      他正沿街走着，突然看见了一位老朋友。

    Oxford Collocations dictionary for students of English


    spy
    noun

    ADJ. enemy, government, police

    VERB + SPY act as, be, work as He denied acting as an enemy spy. | recruit (sb as)

    SPY + NOUN film, movie, novel, story, thriller | camera, plane, satellite | network, ring Counter-intelligence officers uncovered a spy ring involving twenty agents.

    PREP. ~ for He was a spy for the government.

    PHRASES a network of spies

    spyspynoun[搭配]ADJ.enemy, government, police
    敌方间谍；政府密探；警方探子    [搭配]VERB + SPYact as, be, work as
    当间谍；是密探:    He denied acting as an enemy spy. 他否认自己是敌方间谍。recruit (sb as)
    征募（某人当）间谍    [搭配]SPY + NOUNfilm, movie, novel, story, thriller
    间谍电影；间谍小说；间谍故事；惊险间谍片/小说    camera, plane, satellite
    间谍相机；间谍飞机；间谍卫星    network, ring
    间谍网:    Counter-intelligence officers uncovered a spy ring involving twenty agents. 反情报官员发现了一个涉及20 名密探的间谍网。[搭配]PREP.~ for
    …的密探:    He was a spy for the government. 他是政府密探。[搭配]PHRASESa network of spies
    间谍网
    间谍
    间谍

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