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	Sirmian Sirmilik National Park Sirmuellera Sirobasidiaceae siroc sirocco siroccos sirocs sirop sirra sirrah sirrahs sirras sirred sirree sirrees sirring sirs sirtaki siruaballi sirup siruped siruper siruping sirups

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。