string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E7%BB%9C%E9%94%80%E5%94%AE%E6%98%AF%E4%B8%80%E4%BB%BD%E6%80%8E%E4%B9%88%E6%A0%B7%E7%9A%84%E5%B7%A5%E4%BD%9C => Failed to connect to 101.89.117.144 port 38005: Connection refused"
网络销售是一份怎么样的工作
