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在行业上行阶段，亚光科技一度被视为国内豪华游艇制造的标杆，承接过多项大型项目，代表着中国游艇制造的阶段性高点。
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A quadtree reduces this: rebuild the tree each frame, and for each object, query only the nearby region. Objects in distant quadrants are never compared.
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