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.
Stories are light. Light is precious in a world so dark.
我们相信,通过我们的努力,可以让世界变得更美好。
心灵不过是人类经验的总和,从依赖于经验个体的角度来考虑。
"The best children's books are those that respect the intelligence of the child."
林业创新不是要取代自然,而是要与自然合作。