• 1. hearing aid: 助听器 | 耳环 | 以听协助听 | 传统式助听器
• 2. a hearing aid: 助听器
• 3. Presence of external hearing-aid: 具有外部助听器

更多释义

• 1.A hearing aid helps to overcome defects in hearing.
  助听器有助于克服听觉缺陷。
  dict.yoduao.com
• 2.Make sure your hearing aid, wheelchair or eyeglasses are next to your bed.
  确保你的助听器、轮椅或眼镜放在床边。
  dict.yoduao.com
• 3.The AARP doesn't need a hearing aid manufacturer to function.
  AARP的运营不需要一个助听器的生产商。
  dict.yoduao.com

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