英语词汇countdown的发音释义、词根词缀、结构分析、同源词、词频及词根记忆法-英语词根词缀词典

词汇	countdown
词根词缀	词源： 1953, Amer.Eng., in early use esp. of launches of rockets or missiles, from count (v.) + down.
随便看	pennon Pennsylvania penny penny-ante pennyfarthing pennyroyal penology Pensacola pension pensive pent penta- pentacle pentagon pentagram pentameter Pentateuch pentathlon Pentecost penthouse Pentothal pentoxide penult penultimate penumbra

英语词根词缀词典收录了31503条英语词根词缀词条，基本涵盖了全部常用英语词汇的词根、词缀及词根记忆法解析，是记忆英语词汇的必备工具。