string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%BD%A6%E7%9A%84%E6%8A%98%E4%BB%B7%E7%8E%87%E6%80%8E%E4%B9%88%E7%AE%97 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
车的折价率怎么算
