一些15年前的文字处理工具生成的文档无法用现在的软件打开，就是因为它们是以专有格式保存的。
Some word processor documents from 15 years ago cannot be opened with modern software because they're stored in a proprietary format.
一些15年前的文字处理工具生成的文档无法用现在的软件打开，就是因为它们是以专有格式保存的。
Some word processor documents from 15 years ago cannot be opened with modern software because they're stored in a proprietary format.
应用推荐