To be sure, Microsoft does provide a patch that allows old versions of Office to read the new “.docx” format. But Microsoft doesn’t publicize it – or warn you if your Office 2007 file is about to become incompatible with older versions.
可以肯定的是，微软的确提供了一种能让老版Office软件阅读全新“docx”文件的方法。但微软却不做任何宣传——或者警告你Office 2007文件无法与老版本兼容。