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.

科技赋能农业，智慧改变未来，我们要让每一颗蔬菜都充满科技的力量。

A society that does not recognize the rights of its citizens is doomed to decay.

当年的年轻人已变成了花下之尘。