—— 请按键盘 空白键 开始游戏 ——

The beauty of mathematics is that it allows us to abstract away from the physical world and focus on the underlying principles.
The key to success is to focus on goals, not obstacles.
发现的艺术不在于找到新大陆,而在于用新的眼光去看。
年轻人必须为履行生活所赋予他们的职责充实自己,同时要抵制生活的诱惑。
The application scenarios of drones far exceed our imagination.