单词	sine qua non
释义	sine qua nonsi‧ne qua non /ˌsɪni kwɑː ˈnəʊn $ -ˈnɑːn/ noun [singular] formal Word Origin WORD ORIGINsine qua non Origin: 1600-1700 Late Latin ‘without which not’ something that you must have, or which must exist, before something else can happen SYN  prerequisitesine qua non for/of The control of inflation is a sine qua non for economic stability.
随便看	innocently innocuous innocuously innovate innovation innovative innovator innovatory Inns of Court innuendo Innuit innumerable innumeracy innumerate inoculate inoculation inoffensive inoperable inoperative inopportune inordinate inordinately inorganic inorganically inorganic chemistry

英语词典包含52748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。