string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A4%96%E5%8D%96%E5%B1%9E%E4%BA%8E%E7%BD%91%E4%B8%8A%E8%B4%AD%E7%89%A9%E5%90%97 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
外卖属于网上购物吗
