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更新时间：2025-11-25 07:14:47 | 人气：77252 | 作者：乜诗涵, |
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.
更新时间：2025-11-25 07:14:47 | 人气：77252 | 作者：乜诗涵, |
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.
