我总是努力比昨天的自己更好。
I always try to be better than I was yesterday.
如果狮子能说话，我们也无法理解他。
We must strengthen international cooperation to jointly address the challenges of energy security and climate change.
理论计算机科学中的挑战不仅仅是解决问题，而是理解为什么它们难以解决。