string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E5%AE%89%E6%8A%80%E6%9C%AF%E5%93%AA%E4%B8%AA%E8%80%81%E5%B8%88%E6%AF%94%E8%BE%83%E5%A5%BD => Failed to connect to 14.18.117.71 port 38069: Connection refused"
注安技术哪个老师比较好
