人一生不学习，一天闲过，一事无成，这是人生三件可惜事。

I'm the reason your space won't expand.

多项式时间归约的概念对于理解NP完全问题的结构至关重要。

In no way can sport be considered a luxury object.

Life is not complex. We are complex. Life is simple, and the simple thing is the right thing.

Global challenges require global thinking and local action.

"Music is my therapy."

爱不是容易的事。