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Range queries ask "what's inside this box?" But sometimes the question is "what's nearest to this location?" This is the nearest neighbor problem, and you don't know how big your search radius should be. The nearest point might be right next to you or far away.，这一点在新收录的资料中也有详细论述
Mutable versions: Providers immutable; modules use mutable git tags。关于这个话题，新收录的资料提供了深入分析
Зарина Дзагоева
Middle East crisis live: latest news updates