string(283) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E7%BB%9C%E9%94%80%E5%94%AE%E8%BF%99%E4%B8%AA%E5%B7%A5%E4%BD%9C%E5%88%B0%E5%BA%95%E6%80%8E%E4%B9%88%E6%A0%B7 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
网络销售这个工作到底怎么样
