These three forms of activity compose the mental educational activity system together.

三种活动形式共同构成心理教育活动体系。

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Eco-tourism is a new developing tourist activity system with strong vitality and abundant intension in the world.

生态旅游是全球新兴的具有强大生命力而内涵丰富的旅游活动体系。

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Based on relative theory of knowledge activity system, the thorough research is progressed in this article about the technical intermediary system.

基于知识活动系统的相关理论，对技术中介系统展开了深入研究。

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The Cognitive Engine represents the core module of the Extended Activity Reasoning system (EAR) in the CMU-Minds Eye architecture.

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Both drugs turn off a natural brake on immune system activity called CTLA4 (cytotoxic T-lymphocyte antigen 4).

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So remember most of the activity on the system is dark.

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