价的概念是所有结构化学的基础。

The stupid believe that to be truthful is easy; only the artist, the great artist, knows how difficult it is.

Climate change has turned every forester into a climate scientist whether they like it or not.

未来属于那些相信自己梦想之美的人。

一份不允许我用武力捍卫自己免受攻击的契约总是无效的。