「就在那一刻，我知道我已不再是義人，我知道我需要被拯救，」他說。
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Quadtrees are everywhere spatial data exists. Mapping services use quadtree-like tile pyramids to serve map tiles at different zoom levels (Bing's quadkey system, for example, addresses tiles as base-4 paths). Game engines use them for collision detection and visibility culling. Geographic information systems use spatial indexes to store and query spatial datasets. PostGIS uses GiST indexes (R-tree-style) for spatial queries on geometries, while PostgreSQL's core supports quadtree-like SP-GiST indexes for certain data types like points.，这一点在搜狗输入法下载中也有详细论述
Barnett, who originally from Canada but has lived in Guernsey for 20 years, and said: "The brain fog was extreme.