—— 请按键盘 空白键 开始游戏 ——

在全球采矿业中,适应能力就是新的竞争优势。
Around computers it is difficult to find the correct unit of time to measure progress. Some cathedrals took a century to complete. Can you imagine the grandeur and scope of a program that would take as long?
"A picture book is like a small theater."
要真正理解宇宙,我们必须首先理解构成它的最小粒子。