商场如战场，防人之心不可无。  

The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay of symmetry and topology leads to novel quantum states of matter.

政府的职责是帮助那些无法自助的人。

"The past is never dead. It’s not even past."

Every experiment is a step towards understanding the complex mechanisms of life.

阅读的魔力在于它让我们可以活一千次人生。