—— 请按键盘 空白键 开始游戏 ——

The effects of policy changes are often more nuanced than simple economic models suggest.
动物福利不仅仅是伦理问题——它是好的科学和好的商业。
物理学的美丽在于它能够用简单的原理解释复杂的事物。
The only real freedom is the freedom to imagine.