| 单词 | concentration |
| 释义 | concentrationconcentration /ˌkɑnsənˈtreɪʃən/ ●●○ W3 AWL noun 1[uncountable] the ability to think very carefully about something for a long time: A good night’s sleep will improve your concentration. When you’re playing chess, it’s important not to lose your concentration.2[singular, uncountable] a process in which you put a lot of attention, energy, etc. into a particular activity: concentration on We need to increase our concentration on health and safety issues.3[countable, uncountable] a large amount or number of people or things in a particular place: concentration of the concentration of greenhouse gases in the atmosphere areas of the state with high immigrant population concentrations4[countable] science, chemistry the amount of a substance contained in a liquid: concentration of Tests show high concentrations of chemicals in the water. |
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