string(338) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%A6%BB%E5%B2%B8%E4%BA%BA%E6%B0%91%E5%B8%81%E5%85%91%E7%BE%8E%E5%85%83%E6%B6%A8%E7%A0%B46.93%2C%E8%BE%83%E6%97%A5%E5%86%85%E4%BD%8E%E4%BD%8D%E6%B6%A8%E9%80%BE450%E7%82%B9 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
离岸人民币兑美元涨破6.93,较日内低位涨逾450点
