—— 请按键盘 空白键 开始游戏 ——

Mathematical intuition is like a muscle - it grows stronger with exercise.
Art is not a luxury; it’s a necessity.
引自孟德斯鸠,刘凯湘在《民法总论》中引用并阐释其意义
The energy sector is not just about drilling and pipelines; it's about powering the world responsibly.