实证分析与规范分析相结合是经济学分析的一贯原则。

It is a permanent principle that we combine positive analysis and normative analysis in economic analysis.

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在以上原则的指导下，第五章论述了一个实证研究：实验目的、参与者、测试工具、过程、数据分析及讨论。

Underthe guidance of the above principles, Chapter 5 displays an empirical research, which includes experiment objectives, participants, instruments, procedures, and data analysis and discussions.

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逻辑实证主义的这一原则遭到了后来各流派、尤其是被称为“批判理性主义者”的波普的批判。

"Verification Principle" is criticized by schools of thought of later periods, especially by Karl Popper who is known as a "critical-rationalist".

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