Quadtrees
四元树
🗣️ 情景例句
Now, how's the Stewart family?
那么， Stewart全家人都好吗？
Do you know when the next exam is?
你知道下次考试在什么时候吗？
Shops cater for the do-it-yourself craze not only by running special advisory services for novices, but by offering consumers bits and pieces which they can assemble at home.
为了满足自己动手热的需要，商店不仅为初学者提供专门的咨询服务，而且为顾客准备了各种零件，供他们买回家去安装。