Fast User Switching for Multiple Users of a ComputerFor example, if you are creating a Microsoft Word document and leave your computer for a short time, Fast User Switching permits another person to use your computer to access another computer account-perhaps to find a customer's account balance-while leaving your Word session open
參考答案:Fast User Switching for Multiple Users of a Computer
一台电脑多用户间快速切换
例如，如果你创建了一个微软的word文档后，需要离开一小会。这种快速转换会让其它在这时使用你电脑的用户转换到一个新的帐户上，也许通过这样来让新用户找到一个顾客帐户的节余什么的，但此时你的word文件却是仍在运行的。
perhaps to find a customer's account balance这句上面的都翻译的很含糊
这个其实是你离开你电脑时，别人用你电脑可能想做的事。即Fast User Switching permits后接的，是 to use your computer 的具体像，用你电脑干什么。