Marshall's indicator

例句：

1. 1. The Marshall Indexis a widely used measure of economic growth.
   马歇尔指数是广泛使用的经济增长衡量标准。
2. 2.The Marshall Index has been shown to bean effective tool for predicting economic trends.
   马歇尔指数被证明是一种有效的工具，用于预测经济趋势。
3. 3. The Marshall Index hasbeen criticized for its inability toaccurately reflect the true state of the economy.
   马歇尔指数因其无法准确反映真实经济状态而受到批评。