This machine ACTS as the focus of the giant distributed telescope, the largest real-time telescope ever, combining the signals collected from instruments across the world.
这台计算机充当这个巨大的、分布式望远镜的焦点。该望远镜是历史上最大的实时望远镜，把位于世界各地多个设备采集的信号综合了起来。
This is the distance (usually in mm.) from the lens (or primary mirror) to the point where the telescope is in focus (focal point).
就是从透镜(或者主反射镜)到焦点的距离，通常单位是毫米(mm)。
A telescope is an important tool to an astronomer, and a computer is an important tool for a computer scientist-but each is merely a tool, not the focus of study.
望远镜对于天文学家来说是一个重要的工具，同样计算机对于计算机科学家来说是一个重要工具——但是它仅仅只是一个工具，并不是研究的重点。
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