Фото: Morteza Nikoubazl / NurPhoto via Getty Images
船长在其职权范围内发布的命令，船员、旅客和其他在船人员应当执行。
，详情可参考体育直播
（二）投放虚假的爆炸性、毒害性、放射性、腐蚀性物质或者传染病病原体等危险物质扰乱公共秩序的；
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.