string(267) "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%B8%82%E6%94%BF%E5%92%8C%E5%BB%BA%E7%AD%91%E9%9A%BE%E5%BA%A6%E5%AF%B9%E6%AF%94 => Failed to connect to 101.89.159.206 port 38100: Connection refused"
二建市政和建筑难度对比
