string(242) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AD%E5%9B%BD%E7%AC%AC%E4%B8%89%E5%86%9B%E5%8C%BB%E5%A4%A7%E5%AD%A6%E6%98%AF211%E5%90%97 => Received HTTP code 403 from proxy after CONNECT"
中国第三军医大学是211吗
