string(258) "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%E6%9C%80%E8%B4%B5%E7%9A%84%E5%A4%9A%E5%B0%91%E9%92%B1%E4%B8%80%E8%BE%86 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
宝马x6最贵的多少钱一辆
