string(258) "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%86%85%E5%AE%B9%E6%9C%89%E5%93%AA%E4%BA%9B => Failed to connect to 101.89.117.144 port 38017: Connection refused"
网络销售的内容有哪些
