美股股指持续走低，标普500指数跌2%，纳指跌2.69%，道指跌1.59%。

Group 1 - The U.S. stock indices continue to decline, with the S&P 500 index falling by 2% [1] - The Nasdaq composite index decreased by 2.69% [1] - The Dow Jones Industrial Average dropped by 1.59% [1]