This content can be used under two options:
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.
。关于这个话题，新收录的资料提供了深入分析
第十七条 船舶抵押权设立后，抵押人可以转让抵押船舶。当事人另有约定的，按照其约定。抵押船舶转让的，船舶抵押权不受影响。
Медведев вышел в финал турнира в Дубае17:59