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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1. Where is the story coming from? Is it from a reputable source or news site? Some sites specialise in ‘gossip’ and rumour style stories while others focus on the facts. It’s important to know the difference between the two.，详情可参考51吃瓜
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This system behaved much like the older check proofers, reading documents,