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BNC: 1564 COCA: 2752
concentration/͵kɑnsṇˋtreʃən; ˌkɒns$nˈtreIʃ$n/ n 1 [U] when you think very carefully about something you are doing 专心﹐全神贯注: They soon get tired and lose their concentration . 他们很快就累了﹐心不在焉起来。She needed all her powers of concentration to stop herself slipping. 她需要集中全部注意力才不会滑倒。2 [U] when you put a lot of attention, time or energy into one thing 关注﹔重视: +on There was too much concentration on one type of industry. 对一种工业过于重视。3 [C,U] a large amount of something in the same place 集中﹐汇集: +of high concentrations of minerals in the water 水中的矿物质高度积聚

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