A hearing aid helps to overcome defects in hearing.
助听器有助于克服听觉缺陷。
The AARP doesn't need a hearing aid manufacturer to function.
AARP的运营不需要一个助听器的生产商。
It is usually permanent and requires rehabilitation such as the use of a hearing aid.
听力障碍往往是永久性的,需要使用助听器等康复手段。
Cochlear implants, so that's the same kind of function as a hearing aid, to improve hearing, but using a different mechanism.
人工耳蜗移植术,人工耳蜗与助听器同作用相同,都可以改善听力,只是两者原理不同
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