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1.Printed matter or information, such as a title, date, or page number, positioned in the top margin of a page and usually repeated throughout a document, especially a document composed on a word-processing system.
页首打印如置于每一页的顶端空白处的标题、日期或页码的文件或信息，并且在整个文件特别是通过文字处理系统做成的文件中经常重复出现收藏指正
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