We must balance the need for affordable energy today with the imperative of building a sustainable energy future.

I like dogs. You always know what a dog is thinking. It has four moods. Happy, sad, cross and concentrating. Also, dogs are faithful and they do not tell lies because they cannot talk.

精通不是天才或天赋的功能。它是时间和强烈专注于某一特定知识领域的功能。