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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Try from a different point of view, a combination of knowledge to explore social issues, to improve participation in social practice and self-learning ability.

尝试从不同角度、综合多种知识探究社会问题，提高参与社会实践和自主学习的能力。

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Learning of field knowledge is always a choke point of texical analysis.

领域知识获取一直是文本处理中的关键技术。

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