它的主要特征包括：基于类别的新闻故事浏览，基于关键帧的视频摘要和基于关键词的新闻故事查询。
Its main features include category based news story browsing, key frame based video abstract and keyword based news story querying.
从职业套装概念内涵和类别特征入手，分别阐述了现代男性职业套装和女性职业套装的主要设计风格。
According to the conception and the characteristics of the office suits, the paper expounds the main design styles of the office suits for men and women.
文章主要论述语篇标记的类别、语法形式、语文特征及逻辑语文关系等内容。
The essay mainly analyzes the classification, grammatical form, semantic features and logic-semantic relations of discourse markers.
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