—— 请按键盘 空白键 开始游戏 ——

It is not necessary to take life too seriously. You will never get out of it alive.
Development economics is ultimately about improving people's lives.
我根本不是一个思维敏捷的人。我必须花很多时间才能理解一些东西。
发现恒星围绕银河系中心的超大质量黑洞运行是天体物理学的一个转折点。
Strategy is about making choices, trade-offs; it's about deliberately choosing to be different.