英语词汇“mainspring”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	mainspring
释义	mainspring n. 1. the principal spring of a mechanical watch, clock, etc. 2. a chief motive power; an incentive.
随便看	portcullis Porte portend portent portentous porter porterhouse portfire portfolio porthole portico portion Portland cement Portland stone portly portmanteau portolan portrait portraitist portraiture portray Port Salut Portuguese POS pose

英语词典包含43808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。