string(265) "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%E6%A1%88%E4%BE%8B%E7%AD%94%E6%A1%88%E7%94%A8%E5%86%99%E7%AD%94%E5%AD%97%E5%90%97 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
一建案例答案用写答字吗
