市场组合是所有投资者都应持有的唯一风险组合。
The only time success comes before work is in the dictionary.
The paper industry has a responsibility to lead the way in environmental stewardship.
历史总是由胜利者书写,但真相往往藏在失败者的沉默中。
Thought is the means by which the organism negotiates its way through the world.
The Langlands program is not a static set of conjectures but a dynamic field of research.