So, what I'm showing in this picture here is just an electron cloud that you can see.

你们可以看到我现在展示的这张图是,一个电子云。

麻省理工公开课 - 化学原理课程节选

There is a repulsive force, the attractive force between ions of opposite charge is offset by a repulsive force due to electron cloud interactions.

有一个斥力时,存在于电性不同的离子间的引力,是可以被抵消的，因为电子可以相互影响。

麻省理工公开课 - 固态化学导论课程节选