这是引力与行星的相互作用，对吧？

It is the gravitational interaction with planets, right?

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还没有人找到方法来计算从地球到行星的精确距离。

No-one had found a way to calculate accurate distances to the planets from the Earth.

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如果它们是行星的影子，它们就会是圆形的，对吧？

If they were shadows of the planets, they would be circular, right?

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But it is interesting. Let's just, for an order of magnitude say what happens for ground state electron in atomic hydrogen?

但行星模型其实挺有趣的，按照重要的先后顺序，我们来猜想一下,氢原子中的基态电子会发生些什么？

麻省理工公开课 - 固态化学导论课程节选

Mercury is a liquid metal, and mercury, the planet, is the fastest moving naked eye heavenly body. Mars, iron, why is Mars red?

水银是液态金属，水银，行星，是肉眼能看到的运动最快的天体,火星，铁，为什么火星是红色的？

麻省理工公开课 - 固态化学导论课程节选

Depending on how far the planet is from the Sun and where it's located, you will get the left-hand side.

取决于行星到太阳的距离以及行星的位置,你就能列出等号左边的式子

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