大陆并非永久固定，而是处于不断的变化和运动中。
译文：想要看清一个人，应当看看他交的是什么朋友。
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.
"Books are the mirrors that reflect our struggles."
Communicate everything you possibly can to your partners. The more they know, the more they'll understand. The more they understand, the more they'll care. Once they care, there's no stopping them.