唯一真正的智慧是知道你一无所知。
The only true wisdom is in knowing you know nothing.
Satire is a way of speaking truth to power.
奥运会不仅仅是普通的世界锦标赛，而是四年一度的全球青年盛会。
Natural gas will play a critical role in the energy mix as we move toward a lower-carbon future.
The most difficult thing in painting is to be simple.