Real game engines use this pattern (or its 3D cousin, the Octree) for broad-phase collision detection: the quadtree quickly identifies candidate pairs, and a more expensive narrow-phase check tests the actual geometry.
A year later, Kennedy's dream was posthumously seen to fruition. A small step was taken and mankind took its giant leap. The New Nine had done their job.
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记者：5年过渡期，我们牢牢守住了不发生规模性返贫致贫的底线，请问这得益于哪些有力措施？
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