string(294) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%B7%A5%E4%BD%9C%E5%AD%98%E5%9C%A8%E7%9A%84%E9%97%AE%E9%A2%98%E5%85%B7%E4%BD%93%E8%A1%A8%E7%8E%B0%E6%80%8E%E4%B9%88%E5%86%99 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
工作存在的问题具体表现怎么写
