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Sam M

Flash Flood Safety Rules and Tips - 0 views

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    Flash floods kill an average of 100 people in the United States every year in both rural areas and in major cities. You should know these flash flood safety rules and tips.
Kepler L

越科技,越危险?--南都周刊 - 0 views

    • Kepler L
       
      在北京骑着粗轮的山地车在中关村到上地的马路上,最快就30km/h,要比现在在学校骑着低阻力可变速的公路赛车慢很多,现在有above 35km/h,可一直觉得那山地车要快。。。
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