Only in the pole axis theory, do the point and the line become the endogenetic variable and they form the two indispensable factors of constructing spatial structure.
只有在点—轴系统理论中，点、线才都是内生变量，是构建空间结构模型的不可或缺的两大要素。
The Earth spins on an imaginary line called an axis that runs from the north pole to the south pole, while also orbiting the sun.
地球绕一个贯穿南极点和北极点的假想轴旋转，这个假想轴称为地轴。 同时也绕太阳公转。
It turns around its axis, an imaginary line that goes straight through the middle of the earth from the North Pole to South Pole.
它绕着自己的轴旋转；地轴是一条想像的穿过地球中央的、从北极到南极的线。
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