If you copy others directly without indicating the source, it is really plagiarism. Even changing a few words is not enough to avoid plagiarism. Even if it is rewritten properly, the source should be marked.

If the plagiarism pointed out in the comments is only a small part, see if you can delete or modify that part of the text. When replying to the comments, explain that you didn't mean to plagiarize.

However, if you copy a lot of words, there is really nothing you can do. As a lesson, remember to quote words truthfully next time. If the manuscript is rejected, it must be carefully revised before being submitted to the next issue of the journal to ensure that all materials are included in the references.

References:

(Chinese is part of the link)

/opinions/plagiarism