Quadtrees
四元树
🗣️ 情景例句
with one real intergenerational program.
用一套真正跨辈份的活动。
Please make yourself at home.
请随意一点。
If you are citing a train, it is always better to be comfortably early than even a fraction of a minted too late.
如果赶火车，早到总比晚到好，哪怕早到一会儿也好。