The literature to date on noise in school rooms appears to focus on the effects on schoolchildren in general, their teachers and the hearing impaired.

到目前为止，有关教室噪音的文献似乎都集中在它对一般的学生、他们的教师和听力受损者的影响上。

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In the past, the spiral tips of conch shells were often used as AIDS for the hearing impaired.

过去，海螺贝壳螺旋状的尖端常被用作听障人士的助听器。

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Making affordable and properly fitted hearing aids and follow-up services more available can benefit hearing impaired people.

提供更多的可负担得起和正确安装的助听器以及后续服务，可惠益于有听力障碍的人。

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Teachers involved in the action provide specialist advice and support for visually and hearing impaired pupils in mainstream schools across the area.

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Being deaf or hearing impaired may present technological challenges, especially if you are fond of the great outdoors and all the weather-related perils that come with it.

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For the deaf and hearing impaired, an app called SpeechTrans Ultimate lets them communicate with hearing people, who speak out loud into the user's mobile device, and the translated text automatically appears.

BBC: Speeding up work for people with disabilities