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.
可持续发展不是一种选择；它是我们对后代的责任。
有些鸟是注定不会被关在笼子里，因为它们的每一片羽毛都闪耀着自由的光辉。
Writing is the only way I have to explain my own life to myself.
The novel is the most democratic of art forms because it requires only a reader.
You can be the ripest, juiciest peach in the world, and there's still going to be somebody who hates peaches.