In this way, if a design calls for a hosting stack, you can substitute a compatible virtual system.

通过这种方式，如果一个设计调用一个主机栈，您可以替换一个协调的虚拟机系统。

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For example, you might add a server hardware unit and an operating system unit to represent the hosting capabilities of the virtual system.

例如，您可能要添加一个服务器硬件以及操作系统，以代表虚拟机系统的主机功能。

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However, you could also realize this conceptual hosting stack to a virtual system in the same way.

但是，按照相同的方式，您还可以将概念性的主机栈实现为一个虚拟化系统。

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