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Term 1: Term 2:

(subclass AerobicExerciseDevice RecreationOrExerciseDevice) Mid-level-ontology.kif 8228-8228 有氧运动装置 是 娱乐或运动器材 的 subclass
(subclass RowingMachine AerobicExerciseDevice) Mid-level-ontology.kif 8237-8237 RowingMachine 是 有氧运动装置 的 subclass


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