The Mundell-Fleming approach argues that countries can have at most two of the following three conditions: a fixed exchange rate, capital mobility, and macroeconomic (monetary) policy autonomy.

• 蒙代尔-佛莱明模型主张国家可于以下三个条件中至多包含两种特质：固定汇率、资本流动性和宏观经济学（货币）政策自治权。