英语词汇penumbra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	penumbra
词根词缀	penumbra 半影来自拉丁语paene, 几乎，接近；umbra, 阴影，全影，词源同umbrella.
随便看	qualify qualitative quality qualm quandary quango quantifier quantify quantitative quantity quantum quantum leap quarantine quark quarrel quarrelsome quarry quarry quart quarter quarterback quarterdeck quarter-final quarterly quartermaster

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。