Quadtrees
四元树
🗣️ 情景例句
Richard is a real Stewart. Richard
是个典型的Stewart家后代。
The chances for a promotion look really good, but before I get too old I want to see the world.
提升的机会确实无可挑剔，但是在我变得太老之前，我想去看看世界。
Where there's a will,there's a way.
有志者事竟成。