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BNC: 1564 COCA: 2752
concentration
noun /ˌkɒns(ə)nˈtreɪʃ(ə)n/
singularconcentration
pluralconcentrations
Related words
  1. 1
    [U] the process of giving all your attention to something 集中精力;专心;专注

    It took all his concentration to stay awake. 他竭力使自己保持清醒。

    lose concentration :

    She lost concentration for a moment and slipped. 她一不留神滑倒了。

    a lapse of concentration (=a short period when you do not concentrate) 走神 :

    He had a little lapse of concentration and lost the game. 他有点走神,结果输掉了这场比赛。

     Synonyms and related words
    Careful thought: thought, consideration, assessment...
  2. 2
    [C/U] a large number of people or things in one area or a large amount of a particular thing 聚集的人群(或物)

    large concentrations of Christians in this part of the city 聚居在城市这一带的大批基督徒

     Synonyms and related words
  3. 3
    [C/U] science the amount of a substance that is present in something 含量;浓度

    An investigation found high concentrations of cancer-causing chemicals on the property. 一项调查发现该建筑含有大量致癌的化学成分。

     Synonyms and related words
    General words for numbers, amounts and quantities: accumulation, allocation, allowance...

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