Martin Banks, a professor of optometry at Berkeley, says 3-D doesn't allow our eyes to follow the rules because we're focusing on things both far and near at the same time.

VOA: standard.2010.02.21

So, presumably, if we follow our rules so far only one of these should be correct.

那么，可以假定，如果我们按照之前的规则,应该只有一个是正确的。

麻省理工公开课 - 化学原理课程节选

And when we follow the Aufbau principle, we have to follow two other rules.

当我们遵从奥弗堡原理时，我们还需遵从两个其他的规则。

麻省理工公开课 - 化学原理课程节选

So there are two electron configurations in the n equals one shell, if we follow according to the selection rules that we spelled out last day.

如果根据上次课,我们阐明的原子光谱选择定则，我们就会知道在n等于1的那一层,有两种电子图像构型。

麻省理工公开课 - 固态化学导论课程节选