大面积的玻璃顶结构长达250米，覆盖了所有轨道。

The largely transparent roof structure which covers all the tracks over a length of 250 meters.

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但它可能有点离开共有轨道，以避开和地球产生拥挤。

But, it could be somewhat out of our orbit, the Shared orbit, due to trying to evade the Earth, the crowding.

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在太阳系，就有轨道相互交叉，共振能保持其稳定的轨道的例子。

In a solar system in which orbits cross each other, resonances can keep the planets in stable tracks around their stars.

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So we can think about now doing bonding, and now we have four equal orbitals with one electronic each.

我们现在可以考虑成键了，现在我们有4个等价的轨道，每个上面有1个电子。

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And I am going to superscript it molecular orbital, and this upper one, to indicate that it's antibonding, has the asterisk.

我将给分子轨道加上标，这个上标，表示反键轨道，有一个星号。

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And what you find is when you have a bonding orbital, the energy decreases compared to the atomic orbitals.

你们发现当你有个成键轨道的时候，相比原子轨道能量要降低。

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