Hearing aids come in many different sizes and shapes . it is therefore best to visit a specialist or an audiologist for a thorough examination first before deciding on which one to buy 助听器的种类繁多，如长者患有失听，可到医生处去接受适当检查，以决定长者是否需要或适合配带助听器。
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Hearing aids come in many different sizes and shapes . it is therefore best to visit a specialist or an audiologist for a thorough examination first before deciding on which one to buy 助听器的种类繁多，如长者患有失听，可到医生处去接受适当检查，以决定长者是否需要或适合配带助听器。
