《Tetrabiblos》The Periodical Divisions Of TimeClaudius Ptolemy（Ashmand 英譯 1822）
[272] With respect to the periodical divisions of time. [273] It will, of course, be remembered, that the Sun, in the Ptolemaic astronomy, is counted as a planetary orb.
段落 tetra-4-theperiodi-6public-domain (Ashmand 1822)
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