string(300) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%80%82%E5%90%88%E4%B8%80%E4%B8%AA%E4%BA%BA%E5%9C%A8%E5%AE%B6%E5%B9%B2%E7%9A%84%E9%A1%B9%E7%9B%AE%E6%9C%89%E5%93%AA%E4%BA%9B%E5%91%A2 => Failed to connect to 14.18.46.51 port 38206: Connection refused"
适合一个人在家干的项目有哪些呢
