- a device for assisting the hearing of partially deaf people, typically consisting of a small battery-powered electronic amplifier with microphone and earphone, worn by a deaf person in or behind the ear
| 单词 | hearing aid |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 hear′ing aid′,
Collins Concise English Dictionary © HarperCollins Publishers:: hearing aid n
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