共同属性包括名称，作者，关键字，字数在文档中，也是最后一次的文件打印出来。
Common properties include the name of the author, keywords, the number of words in the document and the last time the document was printed.
共同属性包括名称，作者，关键字，字数在文档中，也是最后一次的文件打印出来。
Common properties include the name of the author, keywords, the number of words in the document and the last time the document was printed.
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