主位结构理论是系统功能语言学的重要理论之一，主位结构理论亦是一种可以用于翻译研究和实践的语言学工具。

Thematic Structure Theory is an important theory of systematic functional linguistic, and it is also a linguistic instrument which can be applied to the research and practice of translation.

youdao

语言是人类生存和交流的重要工具，语言的心理过程是如何进行的一直以来都是心理学、语言学工作者所关注的问题。

Language is an important tool in human's survival and intercommunion, and the psycho-process of language is a hotspot problem which be concerned by psychological and linguistic researchers.

youdao

语言是人类生存和交流的重要工具，语言的心理过程是如何进行的一直以来都是心理学、语言学工作者所关注的问题。

Language is an important tool in human's survival and intercommunion, and the psycho-process of language is a hotspot problem which be concerned by psychological and linguistic researchers.

youdao