source vocabulary造句

All hierarchical information from the source vocabularies is retained in the Metathesaurus.
The scope of the Metathesaurus is determined by the scope of the source vocabularies.
The Metathesaurus is organized by concept, and each concept has specific attributes defining its meaning and is linked to the corresponding concept names in the various source vocabularies.
It's difficult to find source vocabulary in a sentence. 用source vocabulary造句挺难的