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.
要在可通过接口看到的DS4500上执行操作，可双击计算机名来打开新窗口。
To perform operations on a DS4500 seen through this interface, double-click the computer name to open a new window.
各种各样的电话服务也不会有，比如通过在账号后面加# 和/或 *来核对银行账户的收支情况，因为这些操作相当于把转义序列传递给银行的计算机。
Various phone services are gone, like checking a bank balance by typing in the account number followed by # and/or *, for these act as escape sequences to the bank computer.
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