Regions with many nearby points keep subdividing. Regions with few or no points stay large. The tree adapts to the data: dense areas get fine-grained cells, sparse areas stay coarse. The split grid is predetermined (always at midpoints), but the tree only refines cells that need it. Sparse regions stay as single large nodes while dense regions subdivide deeply.
2014年，曾燕红首次加入了女子登山队，在随后的两年连续遭遇了雪崩和尼泊尔大地震，曾燕红也受了重伤，抱憾而归。
，这一点在91视频中也有详细论述
不过，这些原则并非不可更改。每一代人都应重新审视它们，并在必要时修改、补充。把它们当作你工作的心理指南。
for storage in self.storages: