Human ecological environment is a compound system consisting of natural, social and normative environments.
人类生态环境是一个包括自然环境、社会环境和规范环境在内的复合生态系统。
Urban land use system is a typical natural, economic and social compound system.
城市土地利用系统是自然、经济和社会复合系统。
Obviously, the rural population structure is a Compound system in general.
可见，农村人口结构是一个广义上的复合系统。
Obviously, the rural population structure is a Compound system in general.
可见，农村人口结构是一个广义上的复合系统。
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