Sitting just a sixth of an inch from the eardrum, closer than any other hearing aid, it maximizes use of the entire outer ear to capture sound naturally.

它比市面上任何助听器离耳鼓都近，仅相距六分之一英寸。这样它可以最大限度地在自然状态下利用外耳来捕捉声响。

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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。

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The first commercial device to use a transistor was the Sonotone 1010 hearing aid, created in 1953.

第一款使用晶体管的商品是诞生于1953年的Sonotone 1010助听器。

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Twelve guides will aid people with both sight and hearing loss with a range of issues, including the use of computers, telephones and public transport.

BBC: Funding to train deafblind guides in Cumbria