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英语解释

hearing-aid

汉语翻译

【计】 *

hearing-aid英语解释

名词 hearing-aid:

  1. an electronic device that amplifies sound and is worn to compensate for poor hearing
    同义词:hearing aid, deaf-aid
  2. a conical acoustic device formerly used to direct sound to the ear of a hearing-impaired person
    同义词:hearing aid, ear trumpet
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