我们开采的每一块煤都在为某个家庭点亮灯光。
"The only limit to our realization of tomorrow will be our doubts of today."
物理学的创新往往来自于以新的方式看待老问题。
人效法地,地效法天,天效法道,道效法自然。
The true value of a forest is measured not in board feet, but in biodiversity.