string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%8C%97%E9%83%A8%E6%B9%BE%E9%9D%A0%E4%BB%80%E4%B9%88%E6%A8%A1%E5%BC%8F%E6%89%93%E9%80%A0 => Failed to connect to 14.18.117.71 port 38093: Connection refused"
北部湾靠什么模式打造
