string(356) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%B7%A5%E4%BD%9C%E4%B8%AD%E5%AD%98%E5%9C%A8%E7%9A%84%E9%97%AE%E9%A2%98%E5%8F%8A%E6%95%B4%E6%94%B9%E6%8E%AA%E6%96%BD%E7%9A%84%E6%80%9D%E8%80%83%E5%8F%AF%E4%BB%A5%E6%80%8E%E4%B9%88%E8%A1%A8%E8%BE%BE%E5%91%A2 => Received HTTP code 403 from proxy after CONNECT"
工作中存在的问题及整改措施的思考可以怎么表达呢
