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BNC: 619 COCA: 826
operation
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
     Synonyms and related words
  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
    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...

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