hearing aid
复数形式
hearing aids
1
助听器, 听力辅助设备
a small electronic device that is worn in or behind the ear and is specifically designed to amplify inaudible sounds to help a person with hearing loss
A hearing aid is a small electronic device worn inside or behind the ear to make sounds louder for individuals with hearing loss. It includes a microphone that picks up sound, a device that increases the volume of the sound, and a speaker that delivers the louder sound into the ear. Hearing aids are designed to improve hearing by making sounds clearer and louder, helping people with hearing difficulties to communicate more effectively and participate more in daily activities. They come in various styles and technologies to suit different types and degrees of hearing loss.
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2
助听喇叭, 圆锥形听觉辅助设备
a conical acoustic device formerly used to direct sound to the ear of a hearing-impaired person
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