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[&:first-child]:overflow-hidden [&:first-child]:max-h-full"。搜狗输入法2026对此有专业解读
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f(x)=(xW1)⊙σ(xW2)
A low threshold preserves detail (more leaf nodes, less compression). A high threshold merges aggressively (fewer leaves, more compression, but the image gets blocky). The grid overlay shows the quadtree structure: large cells in uniform areas, small cells where detail is preserved.