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20赫兹:最新迅雷BT资源
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20赫兹:剧情介绍
Plot Summary:Human hearing is capable of detecting sound waves between 20 and 20.000 Hz. ... merely a small fraction of the frequency spectrum. Most sounds around us go unnoticed.
Human hearing is capable of detecting sound waves between 20 and 20.000 Hz. ... merely a small fraction of the frequency spectrum. Most sounds around us go unnoticed.