The world is changed by your example, not by your opinion.

人工智能中最重要的技能是学习的能力。

Coal’s future depends on our ability to make it cleaner and more efficient.

The natural price of labor is that price which is necessary to enable the laborers, one with another, to subsist and to perpetuate their race, without either increase or diminution.

我的过去是我的动力。