1、
2、
Presbycusis may cause a severe lose of the ability to discriminate sound.
老年性耳聋可以引起完全丧失辨别声音的能力.
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3、
Conclusion Presbycusis may result from the decreased RCD in some extent.
结论RCD降低可能是导致和加重老年性聋发生和发展的原因之一。
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