处理器能力被划分为时间片，应用程序映像经常被换入和换出真实内存，设备访问由需求驱动，还受到访问权限的限制。
Processor capacity is doled out in slices, application images are constantly shuffled in and out of real memory, and device access is driven by demand and policed by access rights.
如果有两个世界，真实世界和数字映像，会怎样呢？
WHAT if there were two worlds, the real one and its digital reflection?
如果有两个世界，真实世界和数字映像，会怎样呢？
WHAT if there were two worlds, the real one and its digital reflection?
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