英语词汇mainspring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	mainspring
词根词缀	Online Etymology Dictionary mainspring n. 1590s, of watches, clocks, etc., from main, adj. + spring, n.3. Figurative use from 1690s.
随便看	plac -plac- placable placard placate placation placatory place placebo place-holder dematerialize dem, demo dem-, demo- demean demeaning demeanor demeanour dement dementation demented dementia demerit Demerol demersal demesne

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。