string(240) "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%E5%85%AC%E8%B7%AF%E9%9A%BE%E7%82%B9%E5%88%86%E6%9E%90 => Failed to connect to 101.89.117.144 port 38076: Connection refused"
二建公路难点分析
