'I'm going to stick at it until I get a home'
A quadtree does the same thing for two-dimensional space. It takes a rectangular region and divides it into four equal quadrants: northwest, northeast, southwest, southeast. If a quadrant has too many points in it, it subdivides again and again. Each subdivision creates smaller and smaller cells where points are densely packed.，更多细节参见91视频
當記者問起「二二八」的意義時，大學生陳彥蓉坦言：「我之前想得很簡單，覺得這就是段歷史，是個可以放假的日子而已。」。关于这个话题，safew官方版本下载提供了深入分析
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