波爱修斯把声音描述成一个掉进水池里的石头激起的波浪。
Boethius describes their knowledge of sound in terms of waves generated by a stone falling into a pool of water.
波爱修斯的模态逻辑直接来自古代，特别是亚里士多德的模态逻辑。
A. M. s Boethius' modalities originated directly from the ancient times, particularly from Aristotle's modalities' logic.
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