The set of letters used to write a language.

用于书写一种语言的字母集合

• 以字母表示语音的书写系统

A writing system where letters represent phonemes.

数学或计算中使用的有限符号集合

A finite set of symbols used in a formal system.

用字母标注

• 按字母顺序排列

The basic elements or fundamentals of a subject.

To arrange alphabetically or label with letters.