And the problem is, that we want to build this abstract data type, but we'd like to basically know what kind of object is it, and what functions actually belong to it, how do we use them?
然后我对它们运行了这个方法,就是这一小段代码这个方法,这有意义么?,当然没有了,对不对?,因为你知道,当你把两个极坐标,表示的点进行相加运算的时候?
And so, since we clearly do feel things, there must be more to us than a physical object."
因为我们拥有感觉事物的能力,所以我们一定比物理对象高级
Then, you've got to say, "What do I have to know about this object at the initial time?
然后,也许你会问,我需要知道物体初始状态的哪些信息呢
And then to create the object, I'll simply do a set of inserts.
我将此返回做为我的集合,然后创建对象,我会一系统简单的插入操作。
And fairly soon into the conversation I demonstrated some principle that you've probably learned in your physics class having to do with an object at rest remaining at rest unless acted upon by a force.
很快,在交谈中,我就展示了一些原理,可能你们在物理课上学过,要使静止的物体保持静止,必须有外力作用。
This also tells you that the mass of an object has nothing to do with gravitation.
这也表明,物体的质量与重力无关
You're asking, "How much i and how much j do I need to build the same object?"
你们会问,"需要多少倍的 i 和多少倍的 j,来构成同一个矢量呢"
So what we would like to do is to describe what the object does by drawing a graph of time versus space and the graph would be something like this.
然后我们要做的就是描述这个物体的运动,通过画一个"x-t"图,画出来的图就像这样
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