英语词汇protractor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	protractor
词根词缀	protractor 量角器，分度规来自protract, 拖延，延长。
随便看	durian during durum dusk dust dust storm dust-up Dutch Dutch courage duty duty-free duvet dwarf dweeb dwell dwindle dyad dye dyke dynamic dynamite dynasty dys- dysentery dysfunction

英语词根词缀词典收录了25228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。