Hearing-aid Tube助听器用电子管
language hearing-aid device语言听力辅助装置
hearing-aid-compatible telephone兼容助听电话
Presence of external hearing-aid具有外部助听器
body-worn hearing aid[耳鼻喉] 体佩助听器;佩戴式助听器
head-band hearing aid头夹式助听器
non-electronic hearing aid非电子助听器
post-aural hearing aid耳后式助听器
N-COUNT（可数名词） A hearing aid is a device which people with hearing difficulties wear in their ear to enable them to hear better. 助听器