真实经济周期模型用反向因果关系的概念来解决货币与产出的关系。

This model explains the relationship between money and output by appealing to the idea of reverse causation.

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第二类模型是真实经济周期模型，即李嘉图模型，其理论前提是李嘉图等价。

The second type of model is the real business cycle model (Ricardian model). This is a model that assumes Ricardian equivalence.

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由于工资和价格的刚性，新凯恩斯模型中此过程所花费的时间要多于真实经济周期模型中花费的时间。

This process takes more time in the New Keynesian model than in the real business cycle model because of rigidities in wages and prices.

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