As a traditional form of settlement, fortress was analyzed in terms of its process of formation, and evolution as well as its features of structural distribution in this essay.
论述“堡”作为一种传统的聚落形式，其形成，演变的经过和结构布局的特点。
The history of biosis is the longtime process of succession characterizing the cyclical features of the succession and evolution of plant communities: succession-differentiation-extinction-evolution.
生命的历史是漫长攸久的演替过程表征着植物群落演替进化的周期性特征，即“演替-分化-灭绝-突变-进化”的过程。
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