| 词汇 | concentration |
| 释义 | concentration KK:[ˏkɑnsєn`treʃәn] DJ:[ˏkɔnsen`treiʃәn] n. 1. 集中[C][U] There is a concentration of people in big cities. 大城市人口集中。 2. 专心, 专注[U] Concentration is essential if you want to do a good job. 如果你想把事情做好, 专心是必要的。 3. 浓缩; 浓度[U][S1] 名复: concentrations |
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