Innovation is not an option; it's a necessity for the survival of the coal industry.

在快速变化的市场中，唯一不变的就是客户的需求。

The true cost of seafood must include the cost of preserving our oceans.

Nursing is about caring for people, not just treating conditions.

The only limit to our realization of tomorrow will be our doubts of today.

Education is the most powerful weapon which you can use to change the world.

理论的最高形式是能够将复杂的事物简化为简单而清晰的原理。