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.
A government spokesperson said: "We are clear: when it comes to children's safety, nothing is off the table, and no company is too big to face the consequences.
，更多细节参见夫子
2.最近一年销售收入在5000万元至2亿元（含）的企业，比例不低于4%。
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Publication date: 10 March 2026