string(294) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%9C%B2%E8%90%A5%E8%90%A5%E5%9C%B0%E5%BB%BA%E8%AE%BE%E6%9D%A1%E4%BB%B6%E5%92%8C%E8%A6%81%E6%B1%82%E6%9C%89%E5%93%AA%E4%BA%9B => Failed to connect to 101.89.117.144 port 38017: Connection refused"
露营营地建设条件和要求有哪些
