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They were seven in number, divided into one group of three and one of four.
该学科共有七门课程, 一组三门,另一组四门.
英汉非文学 - 文明史
英汉双解词典包含4367426条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。