string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BA%8C%E5%BB%BA%E7%AE%A1%E7%90%86%E9%99%88%E6%99%A8%E8%80%81%E5%B8%88%E8%AE%B2%E5%BE%97%E5%A5%BD%E5%90%97 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
二建管理陈晨老师讲得好吗
