body-worn hearing aid [耳鼻喉] 体佩助听器 ; 佩戴式助听器
head-worn hearing aid 头夹化式助听器
worn hearing aid
佩戴助听器
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Even the best hearing aid will sound "flat" or "dull" when worn in only one ear.
即使是最好的助听器，将良好的“单位”或“平淡”时，佩戴在只有一个耳朵。
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Hearing-aid styles fall roughly into two categories: devices worn outside the ear and those inside the ear, which are largely invisible.
WSJ: Conquering Retirement: Hearing-Aid Shopping Tips
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