hearing aid

例句：

1. 1. She needs a hearing aidto help her hear better.
   她需要一副助听器来帮助她更好地听见。
2. 2. The elderlyoften need hearing aids to compensate fortheir hearing loss.
   老年人常常需要助听器来补偿他们的听力损失。
3. 3. The hearing aid helpedher to communicate more effectively with her family.
   这副助听器帮助她与家人沟通得更有效。