To define both of the user programs we need.
要定义我们所需的两个应用程序，请执行以下步骤。
Smaller programs will use either the system tree or the user tree, but not both.
小型程序会使用系统树或者用户树，但是不会同时使用这两者。
Both consoles run different programs in their own user space.
两个控制台在各自的用户空间中运行不同的程序。
The programs below need to be run as the "root" user.
下面的程序需要作为root用户运行。
Word Processing programs are so user-friendly that nobody should worry about how to operate them.
文字处理程序使用简便，谁也不用担心不会操作它。
User service is a client which realize in application programs.
用户服务是指在应用程序中实现的客户端。
These programs are really user - friendly .
这些程序真的很容易使用。
These programs are really user - friendly .
这些程序真的很容易使用。
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