string(240) "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%81%8A%E5%A4%A9%E6%8A%80%E5%B7%A7 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
网络销售聊天技巧
