Translation of "Concerning" in Chinese

Concerning this matter... I really don’t know.

关于这件事。。。我真的不知道。

Concerning this problem, our views are not the same.

在这个问题上，我们的看法不一样。

Concerning the content below, I want to verify two things.

关于下面的内容，我想确认两件事情。

Concerning this word, each expert has a different point of view.

對這個詞，專家們各有不同的看法。

Concerning this issue, I feel that the trash media only report biased information.

关于这个问题，我觉得垃圾媒体只报道了很片面的信息。

He is going to take charge of a project concerning the future of the company.

他将要负责一个关系公司前途的项目。