贝尔的父亲甚至为聋人发明了一套所谓的“可见的语言”。

贝尔的父亲甚至为聋人发明了一套所谓的“可见的语言”。的英文翻译

基本释义

• Bell's father had even gone so far as to develop a system of so-called "visible speech" for the deaf.