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1. Oxford Dictionary

   concentration

   • IPA[ˌkɒnsnˈtreɪʃn]

   英式

   • n.
     the action or power of focusing all one's attention；dealing with one particular thing above all others

   • noun: concentration, plural noun: concentrations

2. • 釋義
   • 相關詞

   n.

   名詞

   • 1. the action or power of focusing all one's attention she was frowning in concentration 同義詞 close attention, close thought, attentiveness, application, industry, ... 更多assiduousness, single-mindedness, absorption, engrossment, focusing, centring, centralization, direction反義詞 inattention, distraction
   • ▪ dealing with one particular thing above all others concentration on the needs of the young can mean that the elderly are forgotten
   • 2. a close gathering of people or things the island has the greatest concentration of seabirds in the north-west 同義詞 gathering, cluster, mass, flock, congregation, ... 更多assemblage, assembly, collection, accumulation, aggregation, agglomeration
   • ▪ the action of gathering together closely the concentration of power in the hands of nobles
   • 3. the relative amount of a particular substance contained within a solution or mixture or in a particular volume of space the gas can collect in dangerous concentrations
   • ▪ the action of strengthening a solution by the removal or reduction of the diluting agent or by the selective accumulation of atoms or molecules by concentration of cell contents and supercooling, frost-hardened plant tissues survive temperatures down to −10°C

   concentration camp

   • n.
     a place where large numbers of people, especially political prisoners or members of persecuted ...

   Oxford American Dictionary

   concentration camp

   • n.
     a place in which large numbers of people, especially political prisoners or members of ...

   Oxford Dictionary

3. • 更多解釋

   concentration

   • IPA[ˌkänsənˈtrāSH(ə)n]

   美式

   • n.
     the action or power of focusing one's attention or mental effort: frowning in concentration the worker needs total concentration

   Oxford American Dictionary