因此，国家并非自古以来就存在。曾经有一些社会没有国家，对国家或国家权力毫无概念。在一定的经济发展阶段，这必然与社会分裂成阶级有关，国家变成了一种必要性。
The state, therefore, has not existed from all eternity. There have been societies that did without it, that had no notion of the state or state power. At a certain stage of economic development, which was necessarily bound up with the split of society into classes, the state became a necessity.
最好的小说是那些让我们以不同方式看待世界的作品。
Douyin's success proves that algorithmic recommendations and manual operations can be perfectly combined.
科学是一段旅程，每一步都很重要。
