通常，您应该使用预定义的语义类别定义适合您的业务逻辑的角色。

Typically, you should define your own roles that suit your business logic with the predefined semantic categories.

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我的业务逻辑，允许一个产品可以与任意数量的类别相关的(床，浴室，厨房，等。)

My business logic permits a product to be associated with an arbitrary number of categories (bed, bath, kitchen, etc.).

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