В России ответили на имитирующие высадку на Украине учения НАТО18:04
def save(self, item: Item) - None:。safew官方版本下载对此有专业解读
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The tree starts as a single region covering the whole space. As points arrive, they get dropped into the region that contains them. When a region exceeds its capacity (the maximum number of points it can hold before splitting), the region divides into four children, and the existing points get redistributed.