—— 请按键盘 空白键 开始游戏 ——

Every piece of fruit tells a story - from the soil it grew in to the hands that harvested it.
粮食问题不仅是经济问题,更是政治问题,关系到国家的长治久安。
In mathematics, the art of proposing a question must be held of higher value than solving it.
在量子力学的领域里,观察者和被观察者密不可分,这对我们关于现实的经典观念提出了挑战。