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concentration
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★
★
noun 
/ˌkɒns(ə)nˈtreɪʃ(ə)n/
/ˌkɒns(ə)nˈtreɪʃ(ə)n/ | singular | concentration |
| plural | concentrations |
- 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 wordsCareful thought: thought, consideration, assessment... - 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 wordsLarge amounts or quantities of a specific kind: a froth of something, avalanche, blizzard... - 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 wordsGeneral words for numbers, amounts and quantities: accumulation, allocation, allowance...
noun¹
noun²
concentration noun
⇨ attention
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