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Term 1: Term 2:

(subclass OpticalDisc DigitalDataStorageDevice) Media.kif 1128-1128 子類 OpticalDisc and DigitalDataStorageDevice
(subclass CompactDisc OpticalDisc) Media.kif 1154-1154 子類 CompactDisc and OpticalDisc
(subclass BluRayDisc OpticalDisc) Media.kif 1187-1187 子類 BluRayDisc and OpticalDisc
(subclass DVD OpticalDisc) Media.kif 1255-1255 子類 DVD and OpticalDisc


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