string(256) "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%E5%93%AA%E4%B8%AA%E6%9B%B4%E5%8F%91%E8%BE%BE => Failed to connect to 61.171.74.35 port 38027: Connection refused"
大连和沈阳哪个更发达
