投资者应避免试图把握市场时机；这是一个失败的战略。
Investors should avoid trying to time the market; it's a losing strategy.
The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay between topology and symmetry leads to novel quantum states of matter.
形式系统的发展彻底改变了我们对数学的理解。
风险不仅仅是损失的概率，还包括结果的不确定性。
你不会忘记那个曾是你最后希望的人的面孔。