string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A4%A7%E8%BF%9E%E5%92%8C%E6%B2%88%E9%98%B3%E7%9B%B8%E6%AF%94 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
大连和沈阳相比
