运行时软件体系结构能够准确描述目标系统的真实状态和行为，对指导软件的维护和演化起着重要的作用。
The runtime software architecture can accurately describe the actual status and behaviors of the target system, which is important to guiding software maintenance and evolution.
从网络教育出现至今，网络教育的体系结构、支撑技术和应用模式也在不断演化。
From the appearance time of e-learning to now, the architecture, supporting technologies and the application mode of e-learning are evolving constantly.
从网络教育出现至今，网络教育的体系结构、支撑技术和应用模式也在不断演化。
From the appearance time of e-learning to now, the architecture, supporting technologies and the application mode of e-learning are evolving constantly.
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