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BNC: 619 COCA: 826
operation
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noun /ˌɒpəˈreɪʃ(ə)n/
singularoperation
pluraloperations
  1. 1
    [C] a planned activity involving a lot of people, especially soldiers or police officers 活动；行动；（尤指）军事行动，警方行动

    This was the biggest military operation for 20 years. 这是20年来最大的军事行动。

    Undercover operations led to the arrest of the gang. 警方的卧底行动使这一团伙的成员悉数落网。

    rescue/relief/cleanup operation :

    The cleanup operation will take weeks. 这次清扫行动要花几周时间。

     Synonyms and related words
    A military or armed attack: air raid, air strike, attack...
     Synonyms and related words
    Crime detection and prevention: agent provocateur, all-points bulletin, APB...
  2. 2
    [C] an action or set of actions that is necessary to achieve something 工序

    Connecting the water supply is a very simple operation. 连接供水系统是一道很简单的工序。

    The computer performs this operation many times every day. 计算机每天要多次执行这项操作。

     Synonyms and related words
    General words for actions and activities: action, measure, doings...
     Synonyms and related words
    A series of actions or activities: series, process, campaign...
  3. 3
    [C] the process of cutting into someone's body for medical reasons 手术

    a stomach/heart operation 胃部/心脏手术

    operation on :

    She may need an operation on her knee. 她可能需要接受膝部手术。

    have/undergo an operation :

    The baby had to have an operation, but he's fine now. 这个婴儿不得不做了一次手术，不过他现在情况很好。

    do/perform/carry out an operation :

    A very experienced heart surgeon will perform the operation. 将由一位非常有经验的心脏外科医生实施这一手术。

     Synonyms and related words
    Medical operations: abortion, angioplasty, appendectomy...
  4. 4
    [C] a company, or a part of a large company 企业；分公司

    The company has recently expanded its UK operation. 该公司最近扩大了它在英国的分公司。

    The group is selling its overseas operations. 该集团正在出售它的海外分公司。

     Synonyms and related words
    General types of business or company: account, acquisition, affiliate...
  5. 5
    [U] the way that something such as a system or service operates （制度、服务等的）运作，实行

    We are visiting schools to explain the operation of the new exam system. 我们正深入到各个学校，对新的考试制度的运作进行解释。

     Synonyms and related words
    Systems and methods for doing things: modality, method, system...
    1. a.
      used about the way that a machine or piece of equipment operates （机器或设备的）运行，运转

      Something was interfering with the radar equipment's operation. 有东西在干扰雷达设备的运行。

       Synonyms and related words
      To work, or to start working (of a piece of machinery): operate, come on, function...
    2. b.
      used about the way that something such as a rule or an idea is used （规则、主意等的）使用，运用

      Science investigates the operation of general laws. 科学研究探索的是普遍法则的作用原理。

       Synonyms and related words
      Use of something: user, use, application...
  6. 6
    [U] the process of controlling something or of making it work 操作；作业；管理

    Operation of this equipment requires special training. 操作这一设备需要特殊的培训。

     Synonyms and related words
    Use of something: user, use, application...
BNC: 619 COCA: 826
operation

noun¹

 1medical醫療ADJECTIVE | VERB + OPERATION | PREPOSITION ADJECTIVE➤major大手術▸➤minor, small小手術▸➤life-saving, vital救生手術；性命攸關的手術▸➤emergency急診手術▸➤routine (especially BrE) 例行手術▸➤delicate精細的手術◇a delicate eye operation精細的眼科手術➤exploratory探查性手術▸➤surgical, transplant外科／移植手術▸➤heart, knee, etc.心臟、膝部等手術VERB + OPERATION➤have, undergo接受手術◇He had an operation to remove a growth.他做了贅生物切除手術。➤come through, survive安然度過手術◇She came through the operation well.她順利地經受了手術。➤carry out, perform動手術◇the surgeon performing the operation動手術的外科醫生PREPOSITION➤during a/the operation在手術中◇She woke during the operation.她在手術過程中醒過來了。➤operation for為⋯進行的手術◇an operation for a kidney problem腎病手術➤operation on對⋯進行的手術◇a major operation on his heart對他的心臟進行的一次大手術
operation

noun²

 2organized activity有組織的行動ADJECTIVE | VERB + OPERATION | PREPOSITION | PHRASES ADJECTIVE➤big, large-scale, major, massive大規模行動；重要行動▸➤covert, undercover秘密行動▸➤combined, joint聯合作戰▸➤tricky (especially BrE) 棘手的行動◇a tricky rescue operation棘手的營救行動➤successful成功的行動▸➤combat, intelligence, military, naval, police作戰／情報／軍事／海軍／警方行動▸➤air, flight, ground, land, sea空中／飛行／地面／陸地／海上行動◇US forces had to conduct ground and air operations.美軍不得不組織一系列地面和空中行動。◇The airline has appointed a new director of flight operations.這家航空公司新任命了一位航班業務主任。➤guerrilla游擊隊行動▸➤clean-up, counterterrorist, drilling, mining, mopping-up, offensive, peacekeeping, relief, rescue, salvage, security, tactical清理／反恐／演習／佈雷／清剿／進攻／維和／救助／營救／救援／安全／戰術行動◇UN troops supervised the relief operations.聯合國部隊監督了這次救助行動。➤banking, building, business, commercial銀行業務；建築施工；商業活動◇restrictions placed on business operations對商業活動的限制➤psychological operations, special operations心理活動；特別行動◇Special operations forces were on the ground in Afghanistan.特別行動部隊已經登陸阿富汗。VERB + OPERATION➤begin, launch, mount, undertake開始行動；發起行動◇The authorities launched a massive security operation in the city.當局在城內展開大規模的安全行動。➤carry out, conduct, run實施行動▸➤oversee, supervise監督行動PREPOSITION➤during a/the operation在行動中◇during joint military operations在聯合軍事行動中PHRASES➤a theatre/theater of operations (= where military operations take place) 戰區
operation

noun³

 3fact of sth functioning運作ADJECTIVE | VERB + OPERATION | PREPOSITION | PHRASES ADJECTIVE➤effective, efficient, smooth有效／高效／順利運轉▸➤normal正常運轉▸➤daily, day-to-day日常運轉◇the smooth day-to-day operation of the department該部門平穩的日常運轉VERB + OPERATION➤come into開始生效◇A ceasefire came into operation in May.停火於 5 月生效。➤bring sth into, put sth into使⋯生效▸➤cease停止運轉◇The factory will cease operation at the end of the year.這家工廠年底停工。PREPOSITION➤during operation運轉中◇The machine can get very hot during operation.這台機器運轉時會變得很熱。➤in operation在運轉中◇The current tax system has been in operation for ten years.現行稅制已運行 10 年了。PHRASES➤in full operation, into full operation處於／進入全面運轉◇the only reactor in full operation唯一全面運轉的反應堆
BNC: 619 COCA: 826
operation noun
⇨ company (a multinational operation) ⇨ project (a rescue operation) ⇨ trade (the firm's banking operations) ⇨ treatment (a medical operation) ⇨ in operation ⇨ active adj.

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