英语词汇rational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	rational
词根词缀	rational 合理的来自拉丁语ratio, 思考，计算，部分，词源同rate, reason.
随便看	septuagenarian septum sepulcher sepulchral sepulture sequel sequence sequential sequester sequestered sequestrate sequin sequoia ser- seraph seraphic sere serenade serendipity serene serenity serf serfdom serge sergeant

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。