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.
Every song has its own personality.
我不是市场计时者。我是价值投资者。
The multiverse is not a theory, but a prediction of certain theories.
"A great story is one that stays with you long after you've finished reading."
成功是相对的：它是我们对自己制造的混乱所能做出的补救。