单词	sign of aggregation
释义	sign of aggregation noun phrase : any of various conventional devices (such as braces, brackets, parentheses, or vinculums) used in mathematics to indicate that two or more terms are to be treated as one quantity Word History First Known Use circa 1942, in the meaning defined above
随便看	sperm-aster sperm-whale porpoise sperma- spermaceti spermacetis spermaduct spermaducts spermagone spermagonia spermagonial spermagonium spermalist Spermaphyta spermaphyta spermaphyte spermaphytes spermaphytic spermaria spermaries spermarium spermary spermat- spermata spermatangia spermatangium

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。