Hearing loss is also known as hearing impairment, which includes being born without hearing (congenital hearing loss). This topic focuses only on gradual hearing loss.
听觉损耗又被称为听力损伤，包括先天性及后天逐渐造成的听觉损耗，这篇文章主要讲的是后天逐渐造成的听觉损耗。
In age-related hearing loss (presbycusis), changes in the inner ear that occur as you grow older cause a gradual but steady hearing loss.
对于年龄引起的听觉损耗（老年性耳聋）来说，随着年龄增长，内耳逐渐发生异变从而逐渐引起听觉一点一点下降。
Hearing loss is a sudden or gradual decrease in how well you can hear.
听觉损耗是指听力突然或者逐渐下降的现象。
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