作为一个改过自新的过来人，很不幸，我可是这方面的专家。

As a reformed addict myself, I am, unfortunately, an expert on the subject.

youdao

作为一个改过自新的过来人，很不幸，我可是这方面的专家。

As a reformed addict myself, I am, unfortunately, an expert on the subject.

youdao