英语词汇toughen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	toughen
词根词缀	toughen 使坚硬，坚强来自tough, 坚硬的，坚强的；-en, 使。
随便看	immoderate immodest immolate immoral immortal immortality immovable immune immunity immunodeficiency immunology immure immutable imp impact impacted impair impairment impale impalpable impanel impart impartial impassable impasse

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。