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.

心理学的任务是将复杂的心理现象还原为最简单的组成部分。

葡萄酒是最有益健康和卫生的饮料。

To write is to resist, to fight against the forces that seek to silence us, to assert our humanity in the face of dehumanization.

Energy security is a crucial guarantee for national development. We must intensify technological innovation to enhance the efficiency of oil and gas exploration and production.