string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%89%93%E9%A2%86%E5%B8%A6%E7%9A%84%E6%96%B9%E6%B3%95%E6%AD%A5%E9%AA%A4 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
打领带的方法步骤
