可持续性不仅仅是一个流行词，它是对未来世代的承诺。
Sustainability is not just a buzzword, it's a commitment to future generations.
"The past is a foreign country; they do things differently there."
A mathematician's work is never done; there are always new questions to explore and new mysteries to uncover.
通过观察你的敌人恐吓你的手段，你可以发现他们最害怕什么。