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Term 1: Term 2:

(subclass HardDisk ComputerDisk) ComputerInput.kif 665-665 HardDisk 是 ComputerDisk 的 subclass
(subclass InternalHardDisk HardDisk) ComputerInput.kif 670-670 InternalHardDisk 是 HardDisk 的 subclass
(subclass CartridgeHardDisk HardDisk) ComputerInput.kif 688-688 CartridgeHardDisk 是 HardDisk 的 subclass


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