Getting children to play together cooperatively depends less on their personal social skills and more on what they are doing – especially if they are not friends – a study shows.

· · 来源：blog-sh资讯

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.

Фото: Алексей Майшев / РИА Новости

2026

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身边的同事聊起故乡，也总有这样的感叹。不过是隔了一段时日没回去，故乡就悄悄有了新变化。这变化，不是大刀阔斧改天换地，倒像是绣花，一针一线地，往这烟火人间里绣进些妥帖而温柔的针脚。

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