And this is the energy level diagram for multi-electron atoms.

看一下能量级图表中，多电子原子的部分。

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When a photon strikes the surface, it excites an electron to a higher energy level, which is specific to the material.

当光子照射到材料表面时，电子受到光子的激发由一个能级跳到更高的能级上，而这些能级对材料来说是特定的。

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Hit it with just the right amount of energy, and it will absorb it, and the electron will jump up to a higher energy level.

适量的能量撞击电子时，电子将吸收能量并跳跃至高能级轨道。

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And instead of having the electron giving off energy as a photon, instead now the electron is going to take in energy from light and move up to that higher level.

与电子以光子形式施放能量不同,我们现在要从光中,获得能量到一个更高的能级。

麻省理工公开课 - 化学原理课程节选

Specifically, we have to take in this exact amount of energy in order to bump the electron up to higher energy level.

特别的，我们严格需要,这么多,来把电子，提升到更高的能级。

麻省理工公开课 - 化学原理课程节选

This energy level diagram helps us understand the relationship between electron filling and bond strength.

能级图能帮助我们,理解电子填充,和键强的关系。

麻省理工公开课 - 固态化学导论课程节选

When the electrons cross the junction, they drop from the higher energy level to the lower one, and the energy each electron loses when it drops takes the form of light to a large extent.

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These pairs are difficult to break up, so any intruding electron, unable to displace an incumbent from a pair, must occupy a higher, vacant energy level within the superconductor in order to stay put.

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