英语词汇polarity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	polarity
词根词缀	Online Etymology Dictionary polarity n. 1640s, originally of magnets, from polar + -ity.
随便看	backdate backdoor back down backdrop backer backfill backfire back-formation backgammon background backhand backhoe backing backlash backless backlist backlog back off backorder backpack back seat backside backslash backslide backspace

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