Negative 1 plus 0 should add up to negative 1, if in fact, we're correct for the c n anion.

负一加上零应该等于负一，如果是这样，我们对于氰离子的结果就是正确的。

麻省理工公开课 - 化学原理课程节选

So if you add up, if you try to calculate the balance of happiness and suffering, you might have a case for saying what they did was the right thing.

合计来看的话，计算一下，幸福与痛苦之差，你也许会认为，他们的所作所为是正确的选择。

耶鲁公开课 - 公正课程节选