string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BB%80%E4%B9%88%E7%AE%97%E5%99%AA%E9%9F%B3%E6%B1%A1%E6%9F%93 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
什么算噪音污染
