—— 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.
"Stories have the power to change how we see ourselves and others."
"The best stories are those that leave room for the reader's imagination."
The past is always tense, the future perfect.
画的表面就像皮肤一样,它把所有东西都结合在一起。