—— 请按键盘 空白键 开始游戏 ——

The ultimate test of any economic theory is whether it improves real-world decisions.
在数学中,最简单的解释往往是最深刻的。
我是野兽,我是狗,我是个该死的问题。
When we talk about food security, we're really talking about national security.
You win championships by character and by playing together as a team.