对付一个不自由的世界，唯一的方法就是变得如此绝对自由，以至于你的存在本身就是一种反叛。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
The beauty of computer science is in its endless possibilities.
The greatest experiments start with a simple question.
水泥生产中的创新必须平衡效率与环境责任。