string(242) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2020%E4%BA%8C%E5%BB%BA%E5%B8%82%E6%94%BF%E5%AD%A6%E9%9C%B8%E7%AC%94%E8%AE%B0 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
2020二建市政学霸笔记
