During the learning, the system selects the knowledge point from the knowledge tree according to the sequencing and shows it by a personalized mode.

在知识学习过程中，系统根据知识树中知识点的序列关系从中选出学习者要学习的知识点，并以最适合学习者个性特征的个性化方式呈现。

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During the learning, the system selects the knowledge point from the knowledge tree according to the sequencing and shows it by a personalized mode.

在知识学习过程中，系统根据知识树中知识点的序列关系从中选出学习者要学习的知识点，并以最适合学习者个性特征的个性化方式呈现。

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