元朗蔣小姐說，他們居住的一帶，能帶寵物的餐廳選擇已經比市區要多，但數目和條件始終有限。
Add a cluster of points in one corner and watch that corner subdivide deeply while the rest of the space stays untouched. Then scatter a few points across the empty region and watch it split only where needed. The tree grows around the data.
，这一点在51吃瓜中也有详细论述
const textSync = Stream.textSync(source);
self.storage = self._init_storage()