wage index

例句：

1. 1. The wage index has been rising steadily since the beginning of the year.
   自年初以来，工资指数一直在稳步上升。
2. 2. The wage index is a key indicator of economic growth.
   工资指数是经济增长的关键指标。
3. 3. The wage index is expected to increase by 5% this year.
   预计今年的工资指数将增长5%。