stock market index

例句：

1. 1.The stock market index has been on the rise since the beginning of the year.
   自年初以来，股市指数一直在上升。
2. 2.The stock market index is closely watched by investors as it can reflect the overall health of the economy.
   投资者密切关注股市指数，因为它可以反映整体经济的健康状况。
3. 3. The stock market index has been a major driver of economic growth in recent years.
   近年来，股市指数一直是经济增长的主要驱动力。