如果没人要这个，我们不妨给他吧。

If no one else wants it, we might as well give it to him.

《牛津词典》

如果你愿意，我们可以去餐馆吃饭。

We can eat in a restaurant, if you like.

《牛津词典》

如果是那样的话，我们就得重新考虑我们的建议。

In that event, we will have to reconsider our offer.

《牛津词典》

So, what we can do instead of talking about the ionization energy, z because that's one of our known quantities, so that we can find z effective.

我们做的事可以代替讨论电离能,因为那是我们知道的量子数之一，那是我们可以解出有效的，如果我们重新排列这个方程。

麻省理工公开课 - 化学原理课程节选

So if we think about what we would do to actually write out this configuration, we just write the energy levels that we see here or the orbital approximations.

如果我们考虑我们所做的去,实际写出电子构型，我们只是写出我们看到的能级,或者是轨道近似就可以了。

麻省理工公开课 - 化学原理课程节选

Clearly, if I take a chalk like this one here, and I throw it on the ground, and it breaks in little pieces, if I run the movie backwards that doesn't make sense, right?

很清楚，如果我拿一支这样的粉笔，把它扔到地上，它会摔成碎片，如果我们把这个场景倒过来放映,那是没有意义的，对吧？

麻省理工公开课 - 热力学与动力学课程节选