澳大利亚总理阿尔巴尼斯15日表示：“今天下午4点， 我将把更严格的枪支法律列入国家内阁的议程，包括限制个人可持有或许可的枪支数量 。此外，还需对许可证进行定期审查。人们的情况会发生变化，人们的思想也会随着时间的推移而变得激进。许可证不应永久有效。”
George WrightBBC News
。safew官方下载对此有专业解读
Израиль нанес удар по Ирану09:28
The efficiency depends on the query size relative to the data distribution. A small query in a sparse region prunes almost everything. A query that covers the whole space prunes nothing (because every node overlaps), degenerating to a brute-force scan. The quadtree gives you the most benefit when your queries are spatially local, which is exactly the common case for map applications, game physics, and spatial databases.
Where quadtrees appear