Linux就是通常所说的单内核(monolithic kernel)，即操作系统的大部分功能都被称为内核，并在特权模式下运行。

The Linux kernel is what's known as a monolithic kernel, which means that the majority of the operating system functionality is called the kernel and runs in a privileged mode.

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回想一下内核模式表示代码执行的特权模式，而用户模式则表示非特权模式（用于那些运行在内核之外的程序）。

Recall that kernel mode represents the privileged mode for code execution, while user mode represents the non-privileged mode (for programs running outside the kernel).

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在管理员批准模式下，无论您是作为标准用户还是管理员运行，每当您尝试执行需要管理员特权的操作时，都会出现UAC对话框。

In admin Approval Mode, the UAC dialog box appears every time that you try to perform an action that requires administrator privileges, whether you are running as a standard user or an administrator.

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