graphemic

例句：

1. 1.The graphemics of the alphabet are used to create words.
   字母的图符用于创建单词。
2. 2. Graphemics are an essential part of language learning.
   图符是语言学习的重要组成部分。
3. 3. The graphemics of different languages can be quite different.
   不同语言的图符可能非常不同。