So now we're putting 2 electrons into the same p orbital, that's not a problem, we can do it, it's not a huge energy cost to do that.

现在我们在同一个，p，轨道上放了两个电子，这没问题，我们可以这样做，这样不会亏损太多能量。

麻省理工公开课 - 化学原理课程节选

So I'll be producing this stuff, this water at cost c and only getting p, which is not only less than c in return.

这就导致成本是c的瓶装水只能卖到p,这个价格都不能捞回本钱呢

耶鲁公开课 - 博弈论课程节选