The civil education is a systematic engineering, it needs sufficient environment support from various social subsystems.
公民教育是一项系统工程，需要社会各个子系统为其提供充分的环境支持。
Constructs the learning strategy system of "GX" Experiment, which consists of three subsystems: learning strategies, relevant factors (learner and environment), and classroom learning efficiency.
构建了GX实验学习策略系统：由GX实验学习策略、相关因素(学习者因素和环境因素)、课堂学习效益三个子系统构成。
The mining area is a complex system composed of the subsystems such as resource, environment, economy and society, etc.
矿区是由资源、环境、经济和社会等子系统构成的复杂系统。
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