同时考虑到商业模式，老年AI陪伴玩具想要走得通还是要靠先to G、to B后to C，单靠C端铺量几乎不可能，因为针对中老年人群的推广教育成本太高了。
if (n <= 1) return;
。同城约会是该领域的重要参考
Code, Data, Media
We have no way to skip over points that are obviously too far away. What if we could organize the space itself so that when we search, we can immediately rule out entire regions?