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Now I have the ability to say, I've got a new class, I can create instances of a line segment, and it's elements are themselves instances of points. OK?
这就是我们要讲模块化的地方了，现在我可以说，我创建了一个新类，我可以创建线段的实例了,这些实例的元素？
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Right that's a specific name, and what it basically says is, when I call the class instance.
好这是个特定的应用，它的意思也就是，让我调用一个类的实例。
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So this is an example of Biomedical Engineering, one that is well integrated into our society to the point that we've probably all got a picture like this somewhere in our past, and where we understand the physical principles that allow us to use it.
故而,这成为生物医学工程的一个实例,这类技术已经很好的融入了我们的社会,因为也许我们每个人都拍过,这样的X光片,正是因为我们懂得了,相应的物理学原理才能去运用这项技术
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Is is essentially saying, given 2 things, do they point to exactly the same referent?
或者换种思考的方式，大家记得我说过当我们，调用类的定义声明的时候,它会创建一个实例？
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Right now, I still have the problem that those classes, those instances of classes, are exposed.
就是这些类，这些类的实例,都是暴露的，我这么说什么意思呢？
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They are instances of a class, and associated with that class is a set of methods.
它们是同一个类的实例，与这个类相关联的是一个方法集,因此例如，我可以说。
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All right, they're not tuples, they're simply an instance with some structuring.
传入这些类的实例，好，他们并不是元组。
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So when I type, I'm sorry, I shouldn't say type, c point although I would have typed it, p dot x, here's what basically happens.
处于特定点的实例的这个概念，我知道它来自于这个类，这个类，when，I，write，因此当我输入，抱歉，我不该说输入的，当我写，虽然我需要输入它，p，x的时候。
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I going to come back in a second to how it actually does that, but it basically says, get me x value for p 1, get me the x value for p 2, compare them, just as you would normally.
是一个类的实例,我要去取的这个实例，所关联的x值，我稍后会讲讲实际上，这里是怎么实现的，但是基本上它的意思就是，给我p1的x值。
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These are instances of a class, and associated with that class are a set of methods things that I can deal with.
但是Python的基本思想是相同的，这是一些一个类的实例,这个类关联了一个方法集,我可以做的一些操作。
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