Every operating system executes in a virtual environment, and there might be (and normally are) several instances of different operating systems running at the same time.
每个操作系统都在一个虚拟环境中运行，因此可能会出现(实际上也会出现)几个不同的操作系统实例同时运行的情况。
Every operating system executes in a virtual environment, and there might be (and normally are) several instances of different operating systems running at the same time.
每个操作系统都在一个虚拟环境中运行，因此可能会出现(实际上也会出现)几个不同的操作系统实例同时运行的情况。
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