So, when we get really close together, granted, there is a net positive negative charge with a Coulombic force of attraction.

当它们真正离得很近时，假设有一个带正负电的电荷,带有库仑引力。

麻省理工公开课 - 固态化学导论课程节选

So in politics, this is about candidates crowding close together towards the center, to try and get as many voters who are close to them.

在政治学中,这是关于候选人集中趋向中间立场,从而拉拢更多立场相近的选民的理论

耶鲁公开课 - 博弈论课程节选