In the first sector, it is mainly talking about the conceptions of scarcity and choice, opportunity cost and the micro and macro economics.

在第一个方面，它主要讲机会成本的稀缺性与选择，微观经济学和宏观经济学的概念。

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Micro and macro economics are the core of Western economics.

微观和宏观经济学是西方经济学的核心。

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The economics system is the reflection of material objects. Materialist dialectics analyses its macro system and micro system. Materialist dialectics is not a kind of doctrine, but a kind of method.

经济学体系是所研究物质客体的反映，唯物辩证法分析了它的宏观体系和微观体系，唯物辩证法不是一种教义，而是一种方法。

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Academics and bureaucrats, absorbed by theories and static models, miss that macro-economics is but the accumulation of micro decisions.

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