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No TPTP formula. May not be expressible in strict first order. Mid-level-ontology.kif 26036-26036 子類 Earphone and Device
No TPTP formula. May not be expressible in strict first order. ComputerInput.kif 502-502 子類 Earphone and ElectricSpeakerDevice
No TPTP formula. May not be expressible in strict first order. ComputerInput.kif 503-503 子類 Earphone and 可穿戴物品


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