我扮演的每一个角色都是我的一部分。

The man with a toothache thinks everyone happy whose teeth are sound. The poverty-stricken man makes the same mistake about the rich.

过去是一种已经发生的未来。

The challenge with hepatitis C was not just to find the virus, but to understand how it evades the immune system.

物理学中的每一个发现都是向理解宇宙宏伟设计迈出的一步。