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听得见却听不清?造成高频听力下降的原因有哪些?
什么是高频听力下降? 它是指对(2kHz-8kHz)高频率声音的辨识力降低。高频听力下降通常表现为能听到对方的声音,但听不清楚讲的什么内容,需要对方多次复述,在嘈杂环境下更为明显。
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