边界是地球脸上的伤疤，是暴力和分裂的标记。

"The body is a battlefield, and every scar tells a story."

穷人通过减少欲望而变得富有。

I don't care what people say about me, I know who I am.

"Language is the skin of thought."

"To write is to explore the unknown territories of the human soul."

The Liskov Substitution Principle is a fundamental concept in object-oriented programming, ensuring that derived classes can be used in place of their base classes without altering the correctness of the program.