—— 请按键盘 空白键 开始游戏 ——

I'm not a politician, I'm an artist. And the artist's job is to be a mirror, not a leader.
There's not a liberal America and a conservative America - there's the United States of America.
The concept of NP-completeness has provided a powerful tool for understanding the complexity of problems.
相关性和因果关系之间的区别不仅仅是学术上的——它可能具有深远的政策影响。
丙型肝炎病毒是一个隐藏的敌人,但只要拥有正确的工具和决心,任何隐藏的敌人都能被发现。