每个产品文档都有一个惟一产品ID以及浏览目录时常常使用的其他重要信息，包括种类、品牌和名称。
Each product document has a unique product ID, as well as other vital information that is commonly used when browsing the catalog, including category, brand, and name.
例如，目录销售和交叉销售、促销及广告几乎是每个品牌特有的。
For example, catalog upsells and cross-sells, promotions, and advertising are most likely unique to each brand.
假设您的Web应用程序需要显示一个按特定品牌过滤的产品目录。
Suppose your Web application needs to display a catalog of products filtered by a specific brand.
应用推荐