string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%9B%B6%E5%9F%BA%E7%A1%80%E5%81%9A%E4%BB%80%E4%B9%88%E5%B7%A5%E4%BD%9C%E6%AF%94%E8%BE%83%E5%A5%BD => Failed to connect to 61.171.74.35 port 38027: Connection refused"
零基础做什么工作比较好
