For most websites where papers are repeatedly checked, in the report of paper repetition check, it will be marked with color to indicate the seriousness of each part of content repetition, generally with red, yellow, green and yellow, while yellow is usually marked to indicate that this part of content is judged as mild plagiarism.

For example, the duplicate checking system of the first draft: green indicates that there is no problem with the paper, yellow indicates that the repetition rate of this part of the sentence in the paper is in the range of 50% to 70%, red indicates that the repetition rate of the paper is above 80%, and both red and yellow need to be revised.

Qualified green parts do not need to be modified, and red parts have high repetition rate. When you revise, there should be great changes in the revision of repeated sentences. Simple modification is useless, and slightly repeated yellow sentences also need to be modified.