为了提高你的搜索排名，你可以添加副标题、标签、分类和描述。
To increase your search ranking, you are able to add subtitles, tags, categories, and descriptions.
此类系统通常采用xml形式表达业务规则、词汇、分类和描述性系统。
Such systems often express business rules, vocabulary, classification, and descriptive systems in XML forms.
他在电影里描述动物的方式常让观众产生迷惑，因为他将我们心中人类和动物的分类概念混合了起来。
He confused his audience in the way he portrayed the animals he filmed, mixing up our notions of the categories human and animal.
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