Sustainability is the future of quarrying, and we must act now.
量子力学的本质在于它不描述单个粒子的行为,而是描述它们行为的概率。
The mind is a complex of processes, not a thing.
The strength of a building is not just in its materials, but in the spirit of the people who use it.
建筑的强度不仅在于其材料,还在于使用它的人的精神。