地球的历史写在其地层中。

The invention of the cotton gin was the result of necessity and observation.

Don't be afraid to take risks in your career.

真正的诗人是能够激发灵感的人。

Modern quarrying requires us to be geologists, ecologists, and community diplomats simultaneously.

"The best way to predict the future is to invent it."

真相很少是纯粹的，也从不简单。