langaha

例句：

1. 1.The study of languages is a fascinating field of research.
   研究语言是一门令人着迷的研究领域。
2. 2. Dialects are often used to describe the differences between different groups of people speaking the same language.
   方言是用来描述说同一语言的不同群体之间差异的。
3. 3.Dialectology is the study of the variations in speech and writing across different regions within a language.
   方言学是研究不同地区在语言的语音和书写上的差异。