string(248) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%8B%B1%E6%96%87%E5%9B%BD%E5%AE%B6%E5%90%8D%E7%A7%B0%E7%9A%84%E4%B9%A6%E5%86%99%E6%A0%BC%E5%BC%8F => Received HTTP code 403 from proxy after CONNECT"
英文国家名称的书写格式
