我们开采的每一块煤都在为某个家庭点亮灯光。
Every lump of coal we mine keeps the lights on in someone's home.
The power of mathematics lies in its ability to abstract and generalize.
The true value of a forest cannot be measured in board feet alone; its worth is in the life it sustains.
我不想成为下一个迈克尔·乔丹,我只想成为勒布朗·詹姆斯。