string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%94%B5%E8%AF%9D%E9%94%80%E5%94%AE%E5%AE%A2%E6%9C%8D%E7%9A%84%E6%8A%80%E5%B7%A7%E5%92%8C%E8%AF%9D%E6%9C%AF => Failed to connect to 14.18.117.71 port 38220: Connection refused"
电话销售客服的技巧和话术
