"Theatre is the art of the invisible made visible."

Diplomacy is a means to achieve national interests, but it should also respect the principles of peace, justice, and rule of law.

体育教育必须以发展完整的人为目标，而不仅仅是发展他的体力。

Sustainability is not an option; it's a necessity for the future of our planet.

关系模型基于谓词逻辑和集合论，为数据库管理提供了坚实的数学基础。