—— 请按键盘 空白键 开始游戏 ——

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
The best way to be successful is to be persistent.
The novel is a mirror walking down the road.
We have seen how the most amiable are at length worn down.
正义的轮子转动缓慢,但却极其精细。