string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%AE%9D%E9%A9%ACx6%E4%BB%80%E4%B9%88%E7%BA%A7%E5%88%AB%E7%9A%84%E8%BD%A6 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
宝马x6什么级别的车
