It seemed I am the originofcoordinates of life in a period, as the place I stepped on was filled with life and vigour, but I do not have anything.
有一段时间我好像成了生命的坐标原点。不管我往哪儿一站，那儿就会充满了生机，可是我一无所有。
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So, in a way, you can think of these as a space analog of polar coordinates because you just use distance to the origin, and then you have to use angles to determine in which direction you're going.
We also control where the graph appears by setting the origin using screen coordinates (see help coordinates for a discussion on the different kinds of coordinate systems).
我们还通过使用屏幕坐标（请参阅 help coordinates ，获得关于不同类型坐标系统的讨论）设置原点来控制曲线图显示的位置。