物理学家为此给出了一个简化的例子：通过一座短但窄的桥或者一条宽但长的公路均可到达一个目的地。

The physicists give a simplified example of how this can happen: trying to reach a destination either by using a short but narrow bridge or a longer but wide motorway.

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这些物理学家给出了一个发生这种事的简单例证：有两条到达目的地的路，一条路是一座短而窄的桥，而另一条是长而宽阔的高速路。

The physicists give a simplified example of how this can happen: trying toreach a destination either by using a short but narrow bridge or a longer butwide motorway.

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最高点是1424米高“大气球”的引人注目的被风吹动的峰顶，可以通过一条连接到D431公路的短径到达。

Highest is the dramatic, wind-buffeted summit of the 1, 424-metre Grand Ballon, reached by a short trail from the D431 road.

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You can kind of see where the syntax is going, looks like a loop, but you can kind of put blocks inside of you, and the little arrow suggests that once you get to the bottom just like our socks example, you're gonna do the following again.

从某种程度上你可以看到它的语法构成,像个循环，你也可以把，一些程序块放到循环中，如同短袜的例子，这个小箭头暗示你一旦到达底部,你将会重复接下来的事情。

哈佛公开课 - 计算机科学课程节选