每当物理学家们揭开大自然的一些新规律，这些知识就可用于制造各种装置，它们实现的功能让人叹为观止——例如，飞机可自由行走于天地间，广播可让千万人足不出户，遍知天下事。

When physicists puzzle out the workings of some new part of nature, that knowledge can be used to build devices that do amazing things — airplanes that fly, radios that reach millions of listeners.

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