So you're implementing this black box, and if its purpose in life is to actually return a value, you have to tell the compiler what kind of value to expect, and this is going to have ripple effects.

你在实现这个黑盒子，如果它的目的是,返回一个值，你必须告诉编译器你期望的是什么类型的值，这个将是一个连锁反应。

哈佛公开课 - 计算机科学课程节选

And so, in fact, if I wanted the other version of it, in fact, if I do this right, 23 it's going to give me 23 because it does the multiplication first, if I wanted the other version of it, Python I need to tell it that, by using, excuse me, parentheses.

因此，实际上，如果我想换种做法，实际上，如果我去执行这个表达式，返回值是3,因为乘法会被优先执行，如果我需要换种做法，我需要告诉，用括号来告诉它。

麻省理工公开课 - 计算机科学及编程导论课程节选

Lithium has three electrons. If it loses two one remains. What is this formula telling us?

锂原子有三个电子，如果它失去两个,剩下一个，那么这个式子告诉了我们什么？

麻省理工公开课 - 固态化学导论课程节选

It turns out you can list one, give it a name, and if you use square brackets, that tells the compiler I actually want to put multiple values inside of this -- inside of this variable and how do we do that?

结果是你可以列举一个，给它取个名字，如果你使用方括号，那是告诉编译器,在里面我需要许多的值--在这些变量里,我怎么做到的？

哈佛公开课 - 计算机科学课程节选

At the end of the semester or at the end of the lecture, if you enjoyed it, by all means tell me that you enjoyed it, that you had fun.

在这学期结束后或者在这个讲座结束后，如果你们喜欢它，务必告诉我你们喜欢，你们获得了乐趣。

哈佛公开课 - 幸福课课程节选

So, we can use Coulomb's force law to think and it does that, it tells us the force is a function of that distance. But what it does not tell us, which if we're trying to describe an atom we really want to know, is what happens to the distance as time passes?

来考虑这两个粒子之间的,它告诉我们力随距离的函数关系,但它不能告诉我们，而我们如果要描述,原子又非常想知道的是,距离随时间的变化时怎样的？

麻省理工公开课 - 化学原理课程节选

It's much more a question of reminding you ; that if you can do it with this, you can do it with anything; but also of reminding you that, after all, reading--reading just anything--is a complex and potentially almost unlimited activity.

选择它主要是为了告诉你们,如果你能用理论来分析这篇，那么分析任何一篇都没问题;,还想提醒大家，阅读任何文章都是个复杂的过程,其中有无限种可能。

耶鲁公开课 - 文学理论导论课程节选

It's basically--if I am told that you're a genius and your genius is about to be in full-flower throughout this class and it's a small class as these classes were, I'll focus more on you, I'll give you more of my attention.

它其实…如果有人告诉我你是天才,你的才智能在这节课上完全体现出来,这个班的人不多，我就会把更多的注意力放在你身上。

耶鲁公开课 - 心理学导论课程节选

It also tells you that if you compress the spring, compress it means x is now-- x is measured from this position, where the spring is neither compressed nor expanded.

它还能告诉你,如果压缩弹簧,压缩就意味着现在 x...,x 是从这个位置开始算的,在这个位置弹簧既没有压缩也没有伸长

耶鲁公开课 - 基础物理课程节选

So this looks like it's doing a little bit of extra work, but you can see, if you look at that how it cuts it down at each stage.

它就做了很多多余的工作,如果你认真看，你能看到每个阶段,它是如果缩减查找空间的，我要告诉你。

麻省理工公开课 - 计算机科学及编程导论课程节选

So, the question we are going to ask is the following, "If I tell you that a particle has a constant acceleration a, can you tell me what the position x is?"

接下来要问的问题就是,如果我说某质点加速度恒为a,你能告诉我它的位移x是多少吗

耶鲁公开课 - 基础物理课程节选