他继续按照他的分类学，把鲸按大小分为三大类或三本书。
Continuing in his taxonomy, he groups whales into three major categories, or books, by size.
分类-工件的分类学。
数据源、服务提供者和基础数据源模型之间的分类学和语义差异的数据映射和解析。
Data mapping and resolution of taxonomy and semantic differences between data sources, service providers, and underlying data source models.
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