string(235) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E5%B9%B4%E4%BA%8C%E5%BB%BA%E7%AD%94%E6%A1%88%E6%9C%BA%E7%94%B5 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
2021年二建答案机电
