For example, an operating system can make a network file server look as though it were a local disk. The model does not represent the fact that the physical disk drive may be miles away.

• 例如，操作系统能够使网络文件服务器看起来像本地磁盘一样，这种模型并没有表现出物理磁盘可能在数里之遥的事实。