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单词	semigroup
释义	sem·i·group (sĕmē-grp′, sĕmī-) n. Mathematics A set for which there is a binary operation that is closed and associative.
随便看	Belorussian be lost on beloved below belowground below the belt below the breadline Belsen Belshazzar belt Beltane belt bag belt highway belting belt sander belt-tightening beltway Beltway beluga Belukha Belva Ann Bennett belvedere Belém bema Bemba

英语词典包含135693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。