string(283) "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%E7%9A%84%E5%B7%A5%E4%BD%9C%E5%86%85%E5%AE%B9%E6%80%8E%E4%B9%88%E5%86%99%E5%A5%BD => Failed to connect to 14.18.117.71 port 38133: Connection refused"
网络销售的工作内容怎么写好
