A graphic character that, when appearing alone or combined with others, is primarily used to represent a sound element of a spoken language, but excluding diacritical marks used alone and punctuation marks.

• 一种图形字符,当单独出现或与其它组合时,主要用来表示口语语言的一个发声元素,但不包括单独使用的变音符号和标点符号。