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.

在电影中，沉默可以像对话一样有力。

The best teams thrive on trust and shared purpose.

不要害怕改变和成长。

愚昧是最大的罪行，没有之一。