统一输出 JSON，便于落地执行和审计：
would hold up today, but still a roadblock to fraudsters who would have a hard
，这一点在搜狗输入法2026中也有详细论述
than the old scheme.)
BBC事實查核在2024美國大選前，也調查了關於非法移民投票的相關指控，研究再次顯示此類案例非常罕見。
Shortcuts: For common scenarios, we pre-calculate the travel time/distance (the "shortcut") between border points within the same cluster and also to border points of immediately adjacent clusters.