成功来自于深刻理解消费者需求。

"文学是时间的见证，记录着人类的情感和思想。"

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.