在海南三亚市那受村，村民苏其文清晨便在田头忙活。村里开设“田间课堂”，他认真当“学生”。从脱贫户成长为十里八乡有名的“植物医生”，他牵头创办专业合作社，各项收入近30万元。
And despite the astronauts being described as "stranded" they never really were.
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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.
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new ReadableStream({