"Silence is as important as the words we speak."
自然定律相对于参考系变换的对称性是物理学最基本的原理之一。
In the land of freedom, every man is a king.
No matter how tough you are, golf will always find a way to humble you.
质量不是权利；它是一种特权。
每一种化学结合完全且仅仅依赖于两种对立的力量，即正电和负电。