Point lookups are useful, but the operation you'll reach for more often is a range query: give the tree a rectangular region and retrieve every point inside it, without scanning the entire dataset.
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贵在精准，重在精准。我们创造的脱贫奇迹，充分证明了精准方略是减贫的制胜法宝。。搜狗输入法2026是该领域的重要参考
At its core, a stream is just a sequence of data that arrives over time. You don't have all of it at once. You process it incrementally as it becomes available.