英语词汇invalidation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	invalidation
词根词缀	Online Etymology Dictionary invalidation n. 1771, noun of action from invalidate, v..
随便看	playboy play-day play-dough player playful playground playhouse play-list playmate play-pen plaything play-time playwright plaza -ple plea plead pleading pleasance pleasant pleasantry please pleased pleaser pleasurable

英语词根词缀词典收录了54763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。