但他们认为在一些国家存在最优税收理论要素。
But they argue that elements of the optimal tax system already exist in some countries.
当代西方税收理论表明：税收能够对风险投资产生重要的影响。
The modern western tax theory indicates that tax has an important effect on venture capital.
当代西方税收理论表明：税收能够对风险投资产生重要的影响。
The modern western tax theory indicates that tax has an important effect on venture capital.
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