美股涨幅扩大，纳指涨2%

array(1) { [471990]=> array(2) { [2]=> array(2) { [0]=> string(12) "外围股指" [1]=> string(18) "纳斯达克指数" } [4]=> array(1) { [0]=> string(19) "同花顺7x24快讯" } } }