数学是概念之间关系的科学，与内容无关。

过去是一个陌生的国度；他们做事的方式不同。

"The more we delve into the quantum world, the more we realize how much we don't know."

The future of coal lies in clean and efficient utilization.

History is, above all else, the creation and recording of that heritage; progress is its increasing abundance, preservation, transmission, and use.

诚信采矿意味着让土地比我们发现时更好。

鸟有巢，蜘蛛有网，人有友谊。

现实总是比我们对它的任何想法都更加丰富。