过去是一个异国他乡；他们在那里做事的方式不同。
The past is a foreign country; they do things differently there.
Money is not the key to happiness, but it helps.
Science is a way of thinking much more than it is a body of knowledge.
在量子力学中，测量的行为可以改变被测量系统的状态。
Our fans are our strength.
一个好的抽象是强调本质而抑制无关紧要的。
粒子的概念只是近似的，并且只有在动量较小的极限下才有意义。