里氏替换原则是面向对象编程中的一个基本概念，它指出子类的对象应该能够替换超类的对象而不影响程序的正确性。
The Liskov Substitution Principle is a fundamental concept in object-oriented programming, stating that objects of a superclass should be replaceable with objects of a subclass without affecting the correctness of the program.
If you want to be successful, surround yourself with people who challenge you.
释义：人的本质以忠诚和守信为美好，道德以喜好学习为极致。
You have to believe in yourself when no one else does.
表演是探索人类状况的一种方式。
解释：大部分有鳞的鱼都带有腥味，而鲈鱼却是淡味的，体现了鱼类味道的多样性。