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.

爱就像风，你看不见它，但你能感受到它。

Certification standards are the compass for responsible forestry.

物理学的目的不是描述自然，而是理解自然。

唯一能让你强大的是你自己的灵魂。