The extension of astronomy from visible light to radio waves to x-rays and gamma rays never failed to lead to the discovery of unusual objects such as radio galaxies, quasars, and pulsars.

从可见光扩展到无线电波，再到 X 射线和伽马射线，天文学总是会发现不寻常的物体，如射电星系、类星体和脉冲星。

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This functionality, which was a nonstandard extension in XSLT 1.x, opens a world of opportunity for XSLT template authors.

这种功能在XSLT 1 . x属于非标准扩展，为XSLT模板创造者打开了新的机会之窗。

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The .bundle extension is a file extension used for plug-in files that adds extra features to the operating system or an application in Mac OS X.

bundle 扩展名是插件文件所用的文件扩展名，插件文件为 Mac OS X 中的操作系统或应用程序添加额外特性。

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Next year, IBM plans to announce additional general purpose blades for the IBM zEnterprise BladeCenter Extension including select IBM System x-based blades running Linux.

ENGADGET: IBM's zEnterprise architecture makes mainframes cool again, also efficient (video)

The IBM zEnterprise BladeCenter Extension allows supports purpose IBM POWER7 and System x BladeCenter systems as well as blades optimized for specific workloads, such as analytics and managing Web infrastructure.

ENGADGET: IBM's zEnterprise architecture makes mainframes cool again, also efficient (video)