单词	obsoletion
释义	obsoletion noun ob·​so·​le·​tion ˌäbsəˈlēshən plural obsoletions : the act of becoming or condition of being obsolete Word History Etymology obsolete entry 1 + -ion
随便看	pentastomides pentastomids pentastomoid Pentastomum pentastyle pentastyles pentastylos pentasulfide pentasyllabic pentasyllable Pentateuch Pentateuchal pentateuches pentateuchs pentathionic acid pentathlete pentathletes pentathlon pentathlons pentatomid Pentatomidae pentatone pentatonic pentatonic scale pentatriacontane

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。