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%E6%80%8E%E4%B9%88%E5%92%8C%E5%AE%A2%E6%88%B7%E5%BB%BA%E7%AB%8B%E4%BF%A1%E4%BB%BB => Failed to connect to 14.18.117.71 port 38069: Connection refused"
网络销售怎么和客户建立信任
