英语词汇certain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	certain
词根词缀	certain 确定来自PIE→krei, sker, 切，分开，词源同crisis, crime, discriminate, score.
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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。