真相很少是纯粹的，也从不简单。
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.
一个有纸、笔、橡皮擦并且坚持严格的行为准则的人，实质上就是一台通用图灵机。
Innovation in quarrying isn't just about machinery; it's about vision and sustainability.