Business Object Repository (BOR): Directory of all object types in a hierarchy format. The object types are each assigned to a package (and hence indirectly to an application component as well).
----------------------分隔线上面是 SAP 标准文档中提供的说明
分隔线下面是我的翻译
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业务对象知识库(BOR):在一个层级格式中显示所有对象类型的目录。每个对象都会分配到一个包(并且因此不直接分配到应用组件)。