It isn't clear why the iPhone is tracking this data, although the possibilities for location-based features are endless - location-based advertising, geofencing apps, and so on.
2
场上围墙的唯一广告是一面绿旗﹐旗上的白色标语提醒大家﹕人口问题是中国面临的最严重问题。
The only advertisement on the rink's fence was a green banner whose white characters reminded Overpopulation is our nation's most pressing problem.
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