string(235) "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%E6%B3%95%E8%A7%84%E5%A4%AA%E9%9A%BE%E4%BA%86 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
2020二建法规太难了
