卡塞尔文献展必须始终是一个问题，而不是一个答案。

Leadership in the coal industry today means navigating the delicate balance between economic necessity and environmental responsibility.

"The past is a foreign country; they do things differently there."

最可持续的水产养殖是那些模仿自然的操作。

Every mathematical theorem is a story, a narrative that unfolds through logic and reason, leading to a deeper understanding of the world.