string(248) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%88%91%E5%9B%BD%E7%9A%84%E4%B8%89%E4%B8%AA%E5%B2%9B%E5%B1%BF%E4%B8%A4%E4%B8%AA%E6%B5%B7%E5%B3%A1 => Received HTTP code 403 from proxy after CONNECT"
我国的三个岛屿两个海峡
