One removable device, the Lyric from InSound Medical of Newark, Calif., sits inside the ear and costs up to $3, 600 annually. (It is disposable and must be replaced regularly.)
加州的InSoundMedicalofNewark公司生产一种名为Lyric的可移动装置，它可以置于耳朵内部，但每年成本超过3600美元（这是一种一次性装置，必须定时更换）。
One removable device, the Lyric from InSound Medical of Newark, Calif., sits inside the ear and costs up to $3, 600 annually. (It is disposable and must be replaced regularly.)
加州的InSoundMedicalofNewark公司生产一种名为Lyric的可移动装置，它可以置于耳朵内部，但每年成本超过3600美元（这是一种一次性装置，必须定时更换）。
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