He was a very unusual musician inasmuch as he was totally deaf.
他是完全失聪的，从这点上来说，他是个很了不起的音乐家。
By 1817, he became totally deaf.
到了1817年，他已经完全聋了。
He's been totally deaf since birth.
自出生起他就完全失聪了。
I know for sure he wasn't totally deaf.
我可以肯定他能听得见声音。
Cochlear implant is a new technology to restore hearing ability to totally deaf people.
人工电子耳蜗是全聋人康复的一项新技术。
Cochlear implant is a new technology to restore hearing ability to totally deaf people.
人工电子耳蜗是全聋人康复的一项新技术。
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