It's as though you try-- try getting upset about the fact that two plus two equals four.

这就像你在尝试-,为二加二等于四而烦恼。

耶鲁公开课 - 死亡课程节选

Try feeling upset at your powerlessness to change the fact that two plus two equals four.

尝试为你无力,改变二加二等于四的事实而痛苦。

耶鲁公开课 - 死亡课程节选

And what you find out if you do these calculations, is that you have a negative 1 for your formal charge on nitrogen, you have a negative 2 for your formal charge on carbon, and you have a positive 2 for your formal charge on sulfur.

而如果你做了这些计算会发现，氮的形式电荷量为负一，碳的形式电荷量为负二，而硫的形式电荷量为正二。

麻省理工公开课 - 化学原理课程节选

If we look at our last structure here where we have nitrogen the middle, we can also figure out all those formal charges, and in this case we have plus 1 on the nitrogen, we have minus 2 on the carbon, and then we end up with a 0 on the sulfur there.

如果我们来看看最后一个结构,在中间的原子是氮，我们同样可以计算出所有的形式电荷，而在这种情况下，氮为正一，碳为负二，而最后硫为零。

麻省理工公开课 - 化学原理课程节选