fluctuation of discount rate

例句：

1. 1. The stock market experienceda significant fluctuation in the last quarter.
   上一季度股市经历了显著的波动。
2. 2. The temperaturehas been fluctuating between20 and 30 degrees Celsius.
   温度在20到30摄氏度之间波动。
3. 3. The economy is experiencinga period of fluctuation due to the globaleconomic crisis.
   由于全球经济危机，经济正经历一段波动期。