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

It's the positive emotion that can take us out from this downward spiral to this upward spiral.

积极情绪,能把我们带离这个下行螺旋进入这个上行螺旋。

哈佛公开课 - 幸福课课程节选