string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%8D%96%E6%B2%B9%E7%BF%81%E5%B0%94%E7%9A%84%E7%94%A8%E6%B3%95 => Failed to connect to 101.89.159.206 port 38187: Connection refused"
卖油翁尔的用法
