comparative linguistics
noun/kəmˌpærətɪv lɪŋˈɡwɪstɪks/
/kəmˌpærətɪv lɪŋˈɡwɪstɪks/
[uncountable]- the study of how related languages are similar and different, especially in order to discover things about a language that both these languages came from, and that no longer exists
比较语言学：研究相关语言的相似性和差异性，特别是为了发现有关这两种语言的来源以及不再存在的语言的事物