string(269) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E5%B9%B4%E4%B8%80%E9%80%A0%E5%9C%9F%E5%BB%BA%E6%A1%88%E4%BE%8B%E7%9C%9F%E9%A2%98%E7%8E%AF%E7%90%83 => Failed to connect to 14.18.117.71 port 38133: Connection refused"
2021年一造土建案例真题环球
