通过五个多月的卫星记录路线，谜题的答案得以揭晓。
The answer to the mystery - unfolding in passages recorded by satellite for more than five months - has been a humbling revelation even to many experts.
如果你给每个孩子带一张路线图，他们可以用钢笔或蜡笔记录你的旅程，并在地图上自己画路标。
If you bring a road map for each child, they can trace your trip in pen or crayon and draw landmarks on the map themselves.
电脑程序甚至可以保存你以前的跑步记录，所以你可以比对相同路线每一次的跑步时间。
The computer program even saves routes that you ran before, so you can compare each time you run the same route.
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