The spatial view (the grid of rectangles) and the tree view (the hierarchy of nodes) represent the same structure. Searching for a point means walking down the tree: at each node, you check which of the four children contains your target coordinate and recurse into that child. You never visit the other three.
Конфликт на Украине может быть завершен в следующем году. Об этом заявил президент Украины Владимир Зеленский, передает Nv.ua в Telegram.，推荐阅读夫子获取更多信息
It meant not all councils needed to make changes to meet the new rules, but the BBC approached each local authority responsible for waste collection to find out what was happening in their area. Further councils have provided responses since this article was first published.，这一点在heLLoword翻译官方下载中也有详细论述
既有战略层面的擘画，也有战术层面的部署。。服务器推荐对此有专业解读