这个壳的作用是非常紧密的包裹细胞。

The function of the shell is very close to clothes that we wear.

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这个壳层的存在表明在过去不久发生过星系之间的大碰撞。

The shells' presence indicates a Titanic clash with another galaxy in the relatively recent past.

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妈妈：因为我们的身体没有骨胳的支撑，只能爬，又爬不快。所以要这个壳的保护！

Mother: not because our body's skeletal support, can only climb, and climb unpleasant. So want to protect this shell!

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So if we actually go ahead and multiply it by the volume of our shell, then we end up just with probability, which is kind of a nicer term to be thinking about here.

乘以壳层的体积,我们就得到了概率，在这里从这个角度，理解问题更好一些,如果我们考虑的是。

麻省理工公开课 - 化学原理课程节选

So, basically what we're saying is if we take any shell that's at some distance away from the nucleus, we can think about what the probability is of finding an electron at that radius, and that's the definition we gave to the radial probability distribution.

本质上我们说的就是,如果我们在距离原子核,某处取一个壳层，我们可以考虑在这个半径处,发现电子的概率，这就是我们给出的,径向概率密度的定义。

麻省理工公开课 - 化学原理课程节选

This should make sense to you, because they don't, in fact, want to gain another electron, because that would mean that electron would have to go into a new value of n, a new shell, and that's really going to increase the energy of the system.

这对大家来说应该容易理解，因为它们实际上不想得到另一个电子，因为这意味着这个电子不得不,到一个新的，n，值更大的壳层上去，这将会增加系统的能量。

麻省理工公开课 - 化学原理课程节选