string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%A2%9C%E6%B5%B7%E8%AE%B2%E8%AF%BE%E6%80%8E%E4%B9%88%E6%A0%B7 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
颜海讲课怎么样
