Фото: Илья Наймушин / РИА Новости
《施政報告》引用了特區政府統計處2019年6月出版的《飼養貓狗的情況》專項調查數字，香港有24.19萬戶居民飼養貓狗，佔整體住戶9.4%。其中，飼養狗隻住戶14.75萬戶，佔整體住戶5.7%，即約每18戶中就有一戶養狗。
。一键获取谷歌浏览器下载对此有专业解读
source .env && node server.js
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.