string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%95%B0%E5%AD%97%E4%BA%BA%E6%B0%91%E5%B8%81%E7%9A%84%E4%B8%8A%E5%B8%82%E8%82%A1%E7%A5%A8 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
数字人民币的上市股票
