string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%BD%A6%E4%BB%B7%E6%8A%98%E6%8D%9F%E8%AE%A1%E7%AE%97%E6%96%B9%E6%B3%95 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
车价折损计算方法
