Background: Deep in the bowels of Cheyenne Mountain is a city-like military complex that once served as North American Aerospace Defense Command (NORAD) 's center.

背景材料：在夏延山的深处像一座城市一样的军事综合隧道，一度作为北美防空司令部(NORAD)的中心。

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Among them are the Aero Glass interface, DVD playback, Windows Media Center, Remote Media Streaming, XP Mode, and even the ability to change your desktop background image or window colors.

其中包括Aero glass界面，DVD回放，Windows Media Center，远程媒体流，XP模式，甚至是更换桌面背景图片或窗口颜色的能力。

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It is an interesting fact that background radiation level in the power plant is lower than in the center of Moscow.

有意思的是，电厂里的本底辐射水平低于莫斯科中心的本底辐射水平。

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There is also a scene of a banner with an American flag in the background and the New York City skyline with the destroyed World Trade Center twin towers.

VOA: standard.2009.09.14

VMware focuses on the virtualization they know from their data center background with a vision to bring cloud, virtual desktop and application delivery together under one product.

FORBES: Why You Cannot Rely on Vendors for Your IT Strategy

By including the FAST AF system, which is the crystallization of years of Olympus AF technology, and the easy controls of the touch screen, subjects throughout the screen can easily be focused on, whether in the center, background, or edges, allowing users to snap the shutter at just the right moment.

ENGADGET: Olympus unveils Stylus XZ-10 with f/1.8-2.7 zoom, smartphone sharing app

When the NCAA tournament ends, football in Florida will reclaim its front-and-center spot while basketball fades into the background for another year.

NPR: Sunshine State Teams Gleaming In NCAA Spotlight