单词	cycloaddition
释义	cycloaddition noun cy·​clo·​ad·​di·​tion ˌsī-(ˌ)klō-ə-ˈdi-shən  : a chemical reaction leading to ring formation in a compound Word History First Known Use 1963, in the meaning defined above
随便看	panic grass panic party panic reaction panic state panic-stricken panica panically panicked panickier panickiest panickiness panicking panickings panicks panicky panicle panicled panicles panicmongers panics paniculate panicum panicums panidiomorphic panier

英语词典包含469781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。