假设实际货币总需求出现下降，即实际货币总需求函数（曲线)向左移动。试分析实际货币总需求下降对汇率、利率和

假设实际货币总需求出现下降，即实际货币总需求函数(曲线)向左移动。试分析实际货币总需求下降对汇率、利率和价格水平的短期影响和长期影响。

  Suppose there is a reduction in aggregate real money demand，that is，a negative shift in the aggregate real money demand function．Trace the short-run and long-run effects on the exchange! rate，interest rate，and price level．