来自《耶鲁大学开放课程：基础物理 第3集 第3集》
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in fact, attach it to the wall.将它与墙相连 -
You can go in outer space--你能到外太空去 -
No, it won't move very much.是的 它不能跑得太远 -
Once we know enough dynamics,一旦我们了解了足够的动力学知识 -
we can answer your question.就能回答你的问题 -
Does outer space even rob you of something to在外太空中你是否 -
which you can anchor a spring?不再能够固定住弹簧 -
The answer is, "No."答案是否定的 -
You can anchor things to objects in outer space.你能将一些东西固定在外太空中的物体上 -
They just won't act the way gravity does.只不过它们不会像有重力时那样运动 -
But you can nail it to the wall and pull one end.你可以将它钉在墙上 拉着它的一端 -
So you pull one end.你拉着弹簧的一端