—— 请按键盘 空白键 开始游戏 ——

The P versus NP problem is one of the most important unsolved problems in computer science.
Education is the foundation upon which sustainable forestry is built.
The poor often have to make more complex financial decisions than the rich.
每个词都是一个世界。
The most beautiful thing we can experience is the mysterious. It is the source of all true art and science.
 On the path to truth, only the brave can persist to the end.
我们都被自己制造的幽灵所困扰。
Art is the most intense mode of individualism that the world has known.