On Thursday, we'll look at why that allows you to do lots of things more conveniently than you can do without mutation.

周四我们会探讨下,为什么这种可变性会让你,在进行很多操作的时候方便了许多。

麻省理工公开课 - 计算机科学及编程导论课程节选

These things run for variable amounts of time because they take input, a list of size of some amount.

而这一段的执行时间是可变的,因为它们需要输入一个包含一些元素的列表。

哈佛公开课 - 计算机科学课程节选

Well now we're going to talk about some mutable types. Things you can change.

那我们接下来要去学习一些可变的类型,我们以一个可能你们大多数人。

麻省理工公开课 - 计算机科学及编程导论课程节选

We talked about the inevitability of death; we talked about the variability, that people have different lengths of time before they die.

我们讨论过了死亡的不可避免性;,我们讨论过了其可变性，不同的人在他们死之前有所的时间长度不同。

耶鲁公开课 - 死亡课程节选

And you'll see as we go through the other big-- the other two "big three" that there is a kind of repetition of this theme.

你们将发现-,在我们讨论其他两大可变因素的时候“,主题上有些重合。

耶鲁公开课 - 心理学导论课程节选

What's variable about them is that they bind to a specific antigen.

它们可变的原因是,它们需要结合不同的抗原

耶鲁公开课 - 生物医学工程探索课程节选

There's something called "variable life," which refers to a life insurance policy where the policyholder can make decisions about the investment of the money in the whole life policy.

有种保单叫做"可变寿险",作为终身寿险的一种,投保人可以自主选择,在终身寿险上进行多少投资

耶鲁公开课 - 金融市场课程节选

Now, you might think, ? well, didn't we already discuss that when we started thinking about variability?

现在你可能会想，我们不是已经谈过这个了吗,就在我们开始讨论死亡可变性的时候？

耶鲁公开课 - 死亡课程节选

And I pointed out that lists are mutable, showed you some examples of mutation.

我提到了数组是可变的，并给你们举了一些例子。

麻省理工公开课 - 计算机科学及编程导论课程节选

Or a list of anything that could be mutable.

或者是包含其它有可变的结果的链表。

麻省理工公开课 - 计算机科学及编程导论课程节选

But in fact, logically speaking at least, variability, although it's a requirement for unpredictability, doesn't guarantee unpredictability.

但实际上，至少在逻辑上讲，可变性虽然是不可预见性的必要条件，但是不可预见性却不是必然。

耶鲁公开课 - 死亡课程节选

In our world, not only do we have variability, we've got unpredictability.

在我们的世界不仅有可变性，还有不可预见性。

耶鲁公开课 - 死亡课程节选

But you see the difference. Great question, and a very important thing to understand, and that's why I'm belaboring this point, since this is where people tend to get pretty confused, and this is why mutation is very important to understand. Yeah.

但是你们已经发现区别了，这问题挺好的，并且有重要的一点需要我们去注意的是，人们经常对可变性这一点感到很迷惑，但是可变性是很重要的,我们需要理解它,这也是我经常强调这一点的原因。

麻省理工公开课 - 计算机科学及编程导论课程节选

The parts at the end of the Y's are variable.

形的末端部分是可变的

耶鲁公开课 - 生物医学工程探索课程节选

We've had inevitability; we had variability.

我们讨论过了死亡的必然性;,死亡的可变性。

耶鲁公开课 - 死亡课程节选

What about the variability of death?

死亡的可变性又如何？

耶鲁公开课 - 死亡课程节选

Lists differ from strings in two ways; one way is that it's mutable, the other way is that the values need not be characters. They can be numbers, they can be characters, they can be strings they can even be other lists.

有两个不同之处，一个在于数组是可变的;,另一点在于数组里面的值，不一定是字符,可以是数，可以是字符,也可以是字符串,甚至可以是其他的数组。

麻省理工公开课 - 计算机科学及编程导论课程节选