- 问题详情:Imaginethesituation.Youaredrivingalongadesertoronamountain.Youhavenoideawhereyouare.Youpassedthelasthousetwohoursago.Thenyourcarbreaksdown.Itisnightanditiscold.Youhavenomobilephone.Whatdoyoudo?Well,nexttimetakeaGPSwithyou.Thisinventionmaybeab...
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