自由最基本的诠释是我们做选择的能力。

Freedom in its most basic sense is our ability to make choices.

youdao

这句话，告诉我们的是，在我们做选择的时候，我们是要考虑机会成本的。

Anyhow, this sentence told us that we need to consider opportunity cost when we make a choice.

youdao

我们选择在这个十年内飞向月球以及做其他的事不是因为它们容易，而是因为它们很艰难。

We choose to go to the moon in this decade and do the other things, not because they are easy but because they are hard.

youdao

So what we want to do, is, I guess another way of saying it is, efficiency is really about choice of algorithm.

因此我们想做的就是，换种说法，效率实际上是算法的选择，我们想要培养你们。

麻省理工公开课 - 计算机科学及编程导论课程节选

So let's do a quick clicker question, and you tell me how many valence electrons does fluorine have? Remember, valence electrons are different from core, they're only the outer-most electrons in the outer-most shell.

那么让我们来做一个小选择题，请大家来告诉我,氟有多少个价电子，要记得，价电子与芯电子不同，它们是在最外壳层的最靠外面的电子。

麻省理工公开课 - 化学原理课程节选

Sometimes, Mill agrees, we might succumb to the temptation to do the latter, to be couch potatoes.

穆勒同意，我们有时会无法抵挡后者的诱惑,选择后者，做沙发土豆。

耶鲁公开课 - 公正课程节选