《Tetrabiblos》The Periodical Divisions Of TimeClaudius Ptolemy（Ashmand 英譯 1822）
One form of this aspect is the vespertine succedent rising, visible; when the star rises immediately after sunset: another is the precise vespertine co-rising; when the star rises and the Sun sets at one and the same time: another is the precedent, vespertine rising, invisible; when the star rises immediately before the Sun sets.
段落 tetra-4-theperiodi-80public-domain (Ashmand 1822)
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