The beauty of topological insulators lies in their robustness; their surface states are protected by symmetry and topology, making them immune to certain types of disorder.

假装，我实际上做了这件事：因此我只是假装假装。

我不在乎出名，我在乎伟大。

I don't want to be the best in the world. I want to be the best for the world.

每一天都是变得更好的机会。