[计] 助听器;
例句:
I wrote a prescription for the hearing aid, and then she left.
我帮她开了助听器的处方, 然后她就离开了.
Grandmother's hearing is getting worse. She needs a hearing aid.
祖母的听觉越来越差, 需要戴助听器.
How do I get a hearing aid through the NHS?
告诉人们如何通过NHS得到 助听器.