他们不懂得，在开放型经济中，利率不可能大幅度下跌；而汇率下降会对产出供给产生收缩效应，这可能会破坏进出口需求效应引发的扩张。
They do not understand that interest rates cannot fall much in an open economy and that a weaker currency has contractionary effects on output supply that could spoil the expansion coming from the effects on export and import demands .
供给收缩效应