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单词	preexist
释义	pre·ex·ist (prē′ĭg-zĭst) v. pre·ex·ist·ed, pre·ex·ist·ing, pre·ex·ists v.tr. To exist before (something); precede: Dinosaurs preexisted humans. v.intr. To exist beforehand. pre′ex·istence n. pre′ex·istent adj.
随便看	master plan master race master's Masters Masters masters-at-arms master's degree master sergeant mastership mastersinger Masterson masterstroke masterwork mastery masthead mastic masticate mastication masticator masticatory mastic tree mastiff mastiff bat mastigophoran mastitic

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。