世界充满了故事,但这些故事其实是一个。
材料中拓扑和对称性之间的相互作用可以导致意想不到且令人兴奋的物理现象。
I don't compete with anyone. I compete with myself.
Civilization will not last, freedom will not survive, peace will not be kept, unless a very large majority of the people unite to defend them.