Due to the Treasury of the debtor is country, its repayment guarantee is the national fiscal revenue, so it is almost no credit default risk, financial market risk minimum credit instruments.

因国库券的债务人是国家，其还款保证是国家财政收入，所以它几乎不存在信用违约风险，是金融市场风险最小的信用工具。

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Second, as a major component of national and local fiscal revenue.

第二，成为国家和地方财政收入的重要组成部分。

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Whatever the form, fiscal revenue eventually comes from the national economic activities. So the changes in the structure will be controlled and influenced by economic activities.

财政收入最终来自于国民经济活动，因而其结构的变动必然受到经济活动的制约和影响。

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