虚拟化的一个优势就是扩展了计算硬件的功能，可允许一台计算机(主机)通过运行多个客户操作系统实现多个角色。

An advantage of virtualization is extending the utility of computing hardware, enabling a single computer (the host) to fulfill several roles by running multiple guest operating systems.

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更详细地介绍活动如何执行，由哪些角色执行的形式化方法是使用业务用例及其实现。

The formalism to describe in more detail how an activity is performed, and by which actors, is to use Business use Cases and their realizations.

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活动安排、用户登记和初始角色设置必须被自动化，其中大部分目标已经实现了。

Event scheduling, user registration and initial avatar set-up must be automated. Much of this has been implemented.

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