《Tetrabiblos》The Periodical Divisions Of TimeClaudius Ptolemy（Ashmand 英譯 1822）
In regard to the earth only, the aspects of the fixed stars are four in number, and are known by the common term of angles: to speak, however, more particularly, they are the oriental horizon, the meridian or mid-heaven above the earth, the occidental horizon, and the meridian or mid-heaven below the earth.
段落 tetra-4-theperiodi-57public-domain (Ashmand 1822)
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