英语词汇up-and-down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	up-and-down
词根词缀	Online Etymology Dictionary up-and-down adj. 1610s, from adverbial phrase up and down (c.1200); see up, adv. + down, adv..
随便看	aequi- aer- aer -aer- aer, aero aer, aero, aeri aer, air, er, ar aerate aeration aeri- aerial aerie aerification aeriform aerify aero- aero aer(o) aero-, aer-, aeri- aerobatics aerobe aerobic aerobics aerobiology aerodonetics

英语词根词缀词典收录了54763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。