当你看起来最轻松时,往往是你最担忧的时候。
The future of energy lies in balancing economic growth with environmental stewardship.
Every mathematical problem is a puzzle waiting to be solved, and every solution is a step closer to understanding the fabric of reality.
在言语之间的沉默中,我们常常发现最深刻的真理。
我认为鼓励孩子们阅读的最好方法是给他们一些让他们爱不释手的书。
The world is a book, and those who do not travel read only one page.