These theories that include different aspects of learning are solid theoretic foundations of cooperative learning.
这些理论包含着有关学习的各个方面，是合作学习的坚实的理论基础。
However, such existential ideas in the novel have not been fully revealed by previous studies because most of them lack solid theoretic foundations.
然而，由于缺乏坚实系统的理论基础，先前对于这部小说的研究未能全面地反映出这些存在主义思想。
The research objective of this paper is to provide theoretic foundations and operation technology for the common information platform and its information system.
研究目的就是为我国共用信息平台及其信息系统建设提供理论基础和实施技术方案。
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