The future of energy depends on our ability to innovate.
模糊集的概念提供了一种自然的方式来处理那些不精确性源于缺乏明确定义的类别成员标准的问题。
We don't inherit the earth from our ancestors; we borrow it from our children. Let's return it better.
The best leaders are those who listen to both the earth and their people.