Therefore, this issue is of great theoretical and practical significance.

因此，本课题具有重大的理论和实际意义。

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And hence, it is of great theoretical and practical significance to study tax burden.

因此，研究税收负担具有重要的理论和实际意义。

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Stressing the rationality of relativism is of great theoretical and practical significance.

强调相对主义的合理性具有十分重要的理论意义和现实意义。

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