n.(词义之间的)下义关系,上下位关系
Hyponymy in semantics is related to denotation and connotation in logics.
语义学的上下义关系涉及逻辑学上的内涵与外延.
Automatic verification of hyponymy relations is a basic problem in knowledge acquisition from text.
上下位关系的自动验证是知识获取中的一个关键问题.