What we are going to say is that the wavefunction for molecular orbitals is going to be an additive sum of the wavefunctions of atomic orbitals.

我想说的是,分子轨道的波函数,就是多个原子轨道,波函数的线性叠加。

麻省理工公开课 - 固态化学导论课程节选

Love and loyalty are mere abstractions, however, without some sort of vehicle for their expression; and the vehicle for their expression then is God's Torah, the sum total of God's teachings and instructions and laws and guidelines, which are supposed to ensure long life and prosperity in the land.

爱和忠诚都是一种无法表述的吸引力,于是律法卷就成了表述它们的方式,即对上帝的教诲，指导，律法和方针的,汇总，它将保证这片土地长久的,繁荣。

耶鲁公开课 - 旧约导论课程节选

We are going to take the sum of the delta H's delta H or the deltas H for all of these little reactions.

我们将会把这些H加和,也就是所有这些过程的。

麻省理工公开课 - 固态化学导论课程节选

In the language, if I can switch to the language of modern economics, one could say that for Thrasymachus politics is a zero-sum game.

换个领域的词汇，让我用现代经济学的话来说，这可能将，Thrasymachus，式的政治,喻成一场零和游戏。

耶鲁公开课 - 政治哲学导论课程节选

So here, I'm going to have delta H, is just the sum for all the products of delta heat of formation right? Here I'm going to put together all the products. So this is a positive heat of formation.

所以这里△H就是所有生成物的,生成热的和,对吧？这里,我要把元素组合成所有这些,生成物，所以这里是正的生成热。

麻省理工公开课 - 热力学与动力学课程节选

If you want to add two vectors, you can add the arrows by the rule I gave you or just add the components of x of the two guys to get the component of the sum and likewise for the y.

如果要把两个矢量相加,你可以用我教给你们的箭头相接的方法,或者就将二者的 x 分量相加,得到和矢量的 x 分量,y 方向也是这样

耶鲁公开课 - 基础物理课程节选