《Tetrabiblos》Knowledge May Be Acquired By Astronomy To A Certain ExtentClaudius Ptolemy（Ashmand 英譯 1822）
Lastly, the _primum mobile_, styled also the tenth sphere, encompasses all the before-mentioned æthereal spheres, and is continually turned upon the poles of the world, by one revolution in twenty-four hours, from the east through the meridian to the west, again coming round to the east.
段落 tetra-1-knowledgem-8public-domain (Ashmand 1822)
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