'Concentration' is the action of focusing one's attention or mental effort on a particular object or activity.
concentration
| 单词 | concentration |
|---|---|
| 发音 | [kɒns(ə)n'treɪʃ(ə)n] |
| 释义 | n. 集中；浓度；专心；集合；浓缩 |
| 词序 | 2774 |
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