Every tree we plant today is a promise to tomorrow.

在物理学的世界里，我们经常发现最简单的问题最难回答。

建筑材料的未来在于更智能、更环保且不牺牲质量的解决方案。

For in the final analysis, our most basic common link is that we all inhabit this small planet. We all breathe the same air. We all cherish our children's futures. And we are all mortal.

我被告知进步的道路既不是快速的，也不是容易的。