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%E9%80%A0%E4%BB%B7%E6%A1%88%E4%BE%8B%E7%AD%94%E6%A1%88 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
2021年造价案例答案
