两年后，又买了第二台，可以显示整个页面，还带有电子数据媒介存储器(8 “软盘)。”
Two years later came another dedicated word processor with a full-page screen and electronic data medium storage (8 "floppy disks)."
由于为逻辑和数据使用了单个存储媒介，所以这种功能可以为应用程序提供更一致的环境。
This functionality can provide a more consistent environment for applications because a single storage medium is used for logic and data.
还应该考虑准备一个工厂类，以便很容易从XML媒介转到数据库媒介(或者有一天可能会用到的其他媒介)。
You should also consider putting a factory in place that allows you to easily move from an XML medium to a database medium (or to anything else you might one day need).
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