经济学应该着重研究不同社会经济形态下生产关系的特殊运动形式。

Economics should focus its study on the special movement of production relationship under different social patterns.

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按照马克思经济学的基本原理，生产力在促进生产方式、生产关系的变化中起着基础性的作用。

In accordance with Marxism plutonomy principle, productivity plays a foundational role in the development of the produce-mode and the produce-relation.

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