This modification enabled a new interface to user space that allows other operating systems to run above the KVM-enabled kernel.

这个修改为用户空间启用了一个新的接口，它可以允许其他操作系统在启用了KVM的内核之上运行。

youdao

LFS on its own teaches the inner workings of a Linux-based operating system, but it does not include a single graphical user interface (GUI).

LFS自己指导基于Linux的操作系统的内部工作，但是它不具有单个图形用户界面(GUI)。

youdao

The graphical user interface for Collection Services is included with the base operating system.

基础操作系统包含了Collection Services的图形用户界面。

youdao

The NOR type needs to be ultrafast because it is directly connected to the central processing unit of a computer and stores its basic input-output system (the operating system used by the microchip that lies beneath user-interface operating systems, such as Windows).

FORBES: Magazine Article

Android is so far proving relatively popular with tablet manufacturers despite nagging concerns about fragmentation of Android's operating system, user-interface and app store ecosystem.

ENGADGET: Strategy Analytics: Apple still owns tablet market, but Android narrows the gap

That's not surprising as it's been among the few where the software giant has controlled "the whole widget" -- choosing the processor, designing the hardware, and developing not only the operating system and user interface, but a host of licensing standards, services and infrastructure supporting Xbox Live.

ENGADGET: Switched On: Pondering PC 3.0