自由的功能是解放他人。

Collaboration across borders isn't optional—it's how we'll save our shared oceans.

Innovation is the ability to see change as an opportunity, not a threat.

Quality is not a slogan; it is a commitment.

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。