string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%80%E5%BB%BA%E5%85%AC%E8%B7%AF%E5%AE%9E%E5%8A%A1%E5%88%98%E6%BB%A2 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
一建公路实务刘滢
