Topological insulators are a prime example of how theoretical predictions can lead to experimental discoveries that reshape our understanding of the physical world.

【释义】一个人的心志直接影响一个人的气节，而气节是统帅身体的重要支撑。

The most important things are the hardest to say.

关键不是消除恐惧，而是控制它。

有时候，最艰难的战斗是在我们自己的脑海中进行的。