| 单词 | concentration |
| 释义 | concentration n. 1. a the act or power of concentrating (needs to develop concentration). b an instance of this (interrupted my concentration). 2. something concentrated (a concentration of resources). 3. something brought together; a gathering. 4. the weight of substance in a given weight or volume of material. Phrases and idioms concentration camp a camp for the detention of political prisoners, internees, etc., esp. in Nazi Germany. |
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