That's the kind of letter people use to write when they went off to Vietnam in my era."

VOA: standard.2010.04.27

They might decide that we have some investment over there we just lost money on and we should take a write off for that.

他们决定说,有几笔投资赔了钱,我们得减掉这些

耶鲁公开课 - 金融市场课程节选

I'm going to assign each chunk to a different writer. And they're going to go off and write that element, that hour's worth of stuff.

我将把每个部分分给一个作家,它们将撰写每一个部分,也就是每个小时的内容，你可以想象你得到的是什么：

麻省理工公开课 - 计算机科学及编程导论课程节选

That makes sense because we're losing energy, we're going to a level lower level, so we can give off that extra in the form of light. And we can actually write the equation for what we would expect the energy for the light to be.

这很合理，因为我们在损失能量,我们要到一个更低的能级去,我们要以光的形式给出额外的能量,我们可以写下光能量的方程。

麻省理工公开课 - 化学原理课程节选