string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%99%90%E5%88%B6%E8%87%AA%E5%B7%B1%E7%9A%84%E8%87%AA%E7%94%B1 => Failed to connect to 101.89.117.144 port 38022: Connection refused"
限制自己的自由
