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单词	concentration
释义	con·cen·tra·tion (kŏn′sən-trāshən) n. 1. a. The act or process of concentrating, especially the fixing of close, undivided attention. b. The condition of being concentrated. 2. Something that has been concentrated. 3. Chemistry The amount of a specified substance in a unit amount of another substance.
随便看	calcarine sulcus Calcasieu River calcedony calcedony calceolaria calceolate calces calci- calcic calcicole calcicolous calciferol calciferous calcific calcification calcifugal calcifuge calcifugous calcify calcimine calcination calcine calcinosis calcite calcitic

英语词典包含135693条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。