However, because of the limit of resources and knowledge, there must be some insufficiency but will be improved by further study.
但由于笔者掌握的资料及知识视野的限制，文章中难免存在一些不足，还有待以后深入学习和研究。
However, because of the limit of resources and knowledge, there must be some insufficiency but will be improved by further study.
但由于笔者掌握的资料及知识视野的限制，文章中难免存在一些不足，还有待以后深入学习和研究。
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