string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%8D%8A%E5%90%A8%E5%85%88%E7%94%9F%E6%98%AF%E5%81%9A%E5%95%A5%E5%B7%A5%E4%BD%9C%E7%9A%84 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
半吨先生是做啥工作的
