Pryor's index

例句：

1. 1.The Pryor's index is a measure of how well the economy is performing.
   普赖尔指数是衡量经济表现的指标。
2. 2.The Pryor's index has been declining steadily for several years.
   普赖尔指数已经连续几年呈下降趋势。
3. 3. The Pryor's index is used to predict future economic trends.
   普赖尔指数被用来预测未来的经济趋势。