《Tetrabiblos》General Division Of The SubjectClaudius Ptolemy（Ashmand 英譯 1822）
They are also separately considered according to the causes by which they are produced; war, pestilence, famine, earthquakes, inundations, and other similar visitations being dependent on such greater and more important causes, as arise only after considerable periods; while slighter causes, arising more frequently, have reference only to the revolution of the seasons; their greater or less variation in cold and heat; the severity or mildness of the weather; the occasional abundance or scarcity of provisions; and other like occurrences.
段落 tetra-2-generaldiv-5public-domain (Ashmand 1822)
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