string(255) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%8D%96%E5%AE%B6%E6%9C%89%E5%93%AA%E4%BA%9B%E6%9D%83%E5%88%A9%E5%92%8C%E4%B9%89%E5%8A%A1 => Failed to connect to 14.18.46.51 port 38044: Connection refused"
卖家有哪些权利和义务
