地球旋转的本质原因是，它是在旋转中形成。
I mean basically the reason why the earth is spinning is because it was formed spinning.
近地半球总是面对地球，远地半球总是远离地球，因为月球在绕地球旋转的同时，它也在以同样的速率绕自己的轴自转。
The near side is always facing Earth and the far side is always facing away, because the moon revolves around the Earth at the same rate that it rotates on its own axis.
在机器人开始探索一个崭新的世界的时侯，实际上人们还停留在围绕地球旋转的阶段，用电脑设计出建立在火星和其他星球上的基地，接着又是遗忘。
Instead man has been stuck making circles around the earth while robots go explore new worlds. Bases on Mars and other planets were designed on computer and forgotten.
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