“终结饥饿，行走天地间”—一年一度全球义走活动的第七年—将有全世界70个国家的人们参与到这一活动中来。
"End hunger: walk the World" - an annual event now in its seventh year - will see people walking for hunger in 70 countries.
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.
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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