1, honestly admit the existence of the problem: First of all, we need to honestly admit the existence of the problem, and clearly express our knowledge and understanding of this problem, while emphasizing our attention to this problem.

2. Emphasize the limitations of research: it needs to be explained that our research can't solve all problems, because research is usually limited by time, funds, technology and data. So we need to make it clear that our research is only an exploration and attempt to this problem under the existing conditions, and has not come up with a perfect solution.