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Deep equality, we get to define, that's what I did by writing same point.
我们需要自己定义，也就是我写比较是不是，同一个点的那个程序。
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Let's go into the third version of this and then start doing something with these constructs.
让我们进入这个程序的第三版,开始用这些概念来写点东西。
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So we're going to choose a point about in the middle of my program.
我们要去选择一个大概,在我们程序中间的点。
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All right, so let's take things up slightly to a more interesting one.
好的，让我们开始学习一个稍微,更有趣点的程序。
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So here's the example I'm going to start with.
做二维几何的程序,关于平面上的点。
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So this first little piece of code right here says, ok you give me 2 points, I'll create another 1 of these lists and I'll simply take the x, sorry I shouldn't say x, I'm going to assume it's the x, the x-values are the two points, add them together, just right there, the y-values, add them together and return that list.
好，为了来认识到这一点,让我们来看一个简单的小例子，在你们的课堂手册上，你可以看到我写了一个小程序,它假设我得到了，这些点中的一些，我想对它们做一些操作，例如我想把它们加到一起，那么这里的第一小片，代码的意思是，好给我两个点，我会再创建一个数组。
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So, for example, if I say TEST and I don't give it a start but I give it an end, then it gives me all the elements up to that point.
例如，我创建了TEST这个元组我没有给他,起始点却给了它一个结束点,然后程序会基于这一点放置所有的元素。
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It adds x to y and stores it into z. But if someone wants to be a even a little more snarky, what does this program do?
它把x加上y，再把结果存到z中，但是如果有人,想要做的有点不合常理点呢，那这个程序会做什么？
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All right, so let's actually write something a little more interesting than "hello world."
好的，让我们来写点比“hello，world“,更有意思点的程序吧“
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And this is now a program that's web based, it's SMS based, it's voice based and it used to be Linux based as you'll see in a couple of weeks and it's just a program thatlet's you click where you are, click where you wanna go and voila, here are the next several shuttles that you can take.
这个程序现在是可以用网络访问的，可以用SMS的，可以用语音访问的,而且它曾经是Linux下的程序,你们几周后就会看到，它是这么一个程序,你可以点击确认你现在的位置,然后点你想要去的位置,然后程序会返回给你你能做的班车。
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