All of them treat it as their research subject and basic theory for our learning.

它们都不例外将其作为本专业重要的研究对象与基础理论内容。

youdao

All of them treat it as their research subject and basic theory for our learning.

它们都不例外将其作为本专业重要的研究对象与基础理论内容。

youdao