В России ответили на имитирующие высадку на Украине учения НАТО18:04
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The algorithm walks the tree recursively. At each node, it checks: does this node's bounding box overlap with the query rectangle? If not, the entire subtree gets pruned (skipped). If it does overlap, it tests the node's points against the query and recurses into the children.，推荐阅读Line官方版本下载获取更多信息
Mr Lemmens said that future spacecraft "should be designed in such a way that they can take themselves out of orbit safely, preferably by doing controlled re-entries".，详情可参考搜狗输入法下载