粒子的概念只是一种近似,仅在特定极限情况下有效。
Never close your lips to those whom you have already opened your heart.
The road to success is always under construction—keep building.
我是一个坚强的女人,但我会哭。我是一个敏感的人。我在乎事情。我不只是一个什么都不在乎的强硬女人。
A good mathematician is not one who knows all the answers, but one who asks the right questions.