string(228) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BB%80%E4%B9%88%E6%98%AF985%E5%92%8C211%E5%A4%A7%E5%AD%A6 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
什么是985和211大学
