英语词汇“二手资料”的释义、用法及例句翻译-英汉例句词典

词汇	二手资料
例句	She quotes secondary and primary sources without distinction.她对二手资料和一手资料的引用毫无区别。Books written in the present day by historians are secondary sources.历史学家们现在写的书都是第二手资料。The book is based mainly on primary sources rather than secondary sources.这本书主要基于一手资料而不是二手资料。His report contained only secondhand information.他的报告里只有第二手资料。
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