The river, which runs through seven US states that share it, is currently facing the worst drought in 1,200 years.
Add a cluster of points in one corner and watch that corner subdivide deeply while the rest of the space stays untouched. Then scatter a few points across the empty region and watch it split only where needed. The tree grows around the data.
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最先感受到的变化，是它开始更好地理解空间和比例了。