The federal income tax is governed by the Internal Revenue Code.

联邦所得税事项由《国内税收法典》调整。

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But the Internal Revenue Service collected only $58.6 billion in federal taxes.

但内部税收部门只收集到了586亿美元的联邦税金。

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But the Internal Revenue Service collected only $58.6 billion in federal taxes.

但内部税收部门只收集到了586亿美元的联邦税金。

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