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。关于这个话题，搜狗输入法2026提供了深入分析
The dashed circle shows the current best distance. As the algorithm finds closer points, the circle shrinks, which causes more subtrees to fail the "could contain a closer point?" test and get pruned. The search usually gets cheaper as it progresses.
Москвичей предупредили о резком похолодании09:45
Donna Lu is an assistant editor, climate, environment and science at Guardian Australia