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单词	quinquennium
释义	quinquennium noun quin·​quen·​ni·​um kwin-ˈkwe-nē-əm  kwiŋ- plural quinquenniums or quinquennia kwin-ˈkwe-nē-ə  kwiŋ- : a period of five years Word History Etymology Latin, from quinque five + annus year — more at five, annual First Known Use 1621, in the meaning defined above
随便看	matrimonially matrimonies matrimonious matrimony matrimony vine matripotestal matrisib matrisibs matrix matrix algebra matrix case matrix mechanics matrix paper matrix sentence matrixes matro- matron matron of honor matronage matronages matronal matronhood matronhoods matronise matronised

英语词典包含469781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。