可持续性不是一种选择，而是一种必需。

Before you are old， attend as many funerals as you can bear， and listen. Nobody talks about the departed’s achievements. The only thing people will remember is what kind of person you were while you were achieving.

战略描绘着公司寻求独特而打造的领域。

我从未上过时装学校。我是一个热爱服装的销售员。

L-函数的研究不仅仅是证明定理，而是理解模式。

Energy security is a crucial part of national strategic security, and we must firmly keep it in our own hands.