请教一段对话的意思

问题描述:

请教一段对话的意思
(Man A):According to these direction ,there's detour up ahead and we go on the local road.
(Woman): I know.There was a sign a mile or so back, saying we're going to be rerouted.
(Man A):Our turn is coming up. I hope we won't miss it because we're off on some unmarked track.
这段话我不懂 ,请高人解释一下!

根据这些说明,前面有条便道,我们该在当地的路上行使
我知道,刚才,在车子一公里后的地方有个路牌,上面说我们要改变路线了
就要到了.我希望我们不会错过它,因为我们正在一条没标记的路上行驶