纳指期货跌幅扩大至1%、标普500指数期货现跌0.75%、道指期货跌0.6%

Group 1 - The Nasdaq futures have expanded their decline to 1% [1] - The S&P 500 index futures are currently down by 0.75% [1] - The Dow Jones futures have decreased by 0.6% [1]