concentration [ˌkɑːnsnˈtreɪʃn]

序号
569
英⽂释义
n. close attention; focusing; gathering; the relative amount of a particular substance contained within a solution or mixture or in a particular volume of space
中⽂释义
n. 专注；聚集; 浓度
扩展
词根：centr表示center "中⼼" egocentric adj. ⾃我为中⼼的；⾃私 ⾃利的 eccentric adj. 古怪的；不寻常的 (ec=ex=out)
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