单词	coumarone
释义	coumarone /ˈkuːmərəʊn / noun [mass noun] Chemistry An organic compound present in coal tar, used to make thermoplastic resins for paints and varnishes. A bicyclic compound with fused benzene and furan rings; chemical formula: C8H6O. Origin Late 19th century: from coumarin + -one.
随便看	overrash over-rashly overrate overreach overreach boot overreacher overreachingly overreact overreaction over-read overread over-reaving over-reckon over-record overrecorded over-recording overrecover over-refine over-refinement over-refreshed over-reliance over-rent over-rented over-renting over-report

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。