Therefore, the comparative study is difficult.

因此，比较研究有一定的难度。

youdao

Therefore, the comparative study on them is a very important and significant issue.

所以，对它们的比较研究便是一个非常重要和意义重大的课题。

youdao

Therefore, the comparative study on them is a very important and significant issue.

所以，对它们的比较研究便是一个非常重要和意义重大的课题。

youdao