能够在其他操作系统上运行的操作系统被称为hypervisor(这个术语是在20世纪70年代出现的)。
With the ability to run operating systems on other operating systems, the term hypervisor resulted (a term coined in the 1970s).
如果把CES上所有的平板电脑产品排成一行，并忽略其上运行的操作系统，你看到的将是一块块多少有点儿类似的板子构成的一个壮观展示。
If you lined up all the tablets at the CES and ignored the OS each was running, you'd have a mass display of lots of slates that looked more or less the same.
它们直接运行在硬件上，虚拟的操作系统又运行在它们之上。
They run directly on the hardware with guest operating systems running on top of them.
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