现有的经济理论倾向于支持乐观派，理性消费者会依据财富变动而对他们长期支出进行调整，而不是悠闲自在的去面对。
Economic theory tends to support the optimists. Rational consumers should adjust their long-term spending in response to changes in their wealth, not the ease with which they can tap it.
一种认为在某一特定系统内的经济变动，如通货膨胀率的变动，主要是由货币供应量的增减引起的理论。
A theory holding that economic variations within a given system, such as changing rates of inflation, are most often caused by increases or decreases in the money supply.
因此，对陕西省产业结构变动与经济增长关系进行研究，具有十分重要的理论和现实意义。
Therefore, to study relationship between the changes in industrial structure in Shaanxi Province and the economic growth has a very important theoretical and practical significance.
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