一个类别定义了一个特定种类的设备：移动电话、简单寻呼机和电脑记事本都是单独的类别。
A category defines a particular kind of device; cellular telephones, simple pagers, and organizers are separate categories.
Rollyo：使用这个高度自定义搜索引擎，你只要键入一个关键字或者短语，然后选择特定类别就可以搜索，类别包括旅游和酒店、卫生、明星绯闻等。
Rollyo: This highly customizable search engine lets you enter a keyword or phrase and then select specific categories to search, like travel and hotels, health, celebrity gossip and more.
Rollyo：使用这个高度自定义搜索引擎，你只要键入一个关键字或者短语，然后选择特定类别就可以搜索，类别包括旅游和酒店、卫生、明星绯闻等。
This highly customizable search engine lets you enter a keyword or phrase and then select specific categories to search, like travel and hotels, health, celebrity gossip and more.
点击样式和格式窗口左上方的图标之一，显示一个特定类别的样式列表。
Click on one of the ICONS at the top left of the styles and Formatting window to display a list of styles in a particular category.
点击样式和格式窗口左上方的图标之一，显示一个特定类别的样式列表。
Click on one of the ICONS at the top left of the styles and Formatting window to display a list of styles in a particular category.
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