股票指数

例句：

1. 1. The stock index has been rising steadily since the beginning of the year.
   自年初以来，该股票指数一直在稳步上升。
2. 2. The stock index is closely watched by investors as a measure of the overall health of the economy.
   投资者密切关注股票指数，作为衡量经济整体健康状况的一个指标。
3. 3. The stock index has reached a new high, indicating strong market sentiment.
   股票指数达到了新高，表明市场情绪强劲。