(subclass Transparency PrintedSheet) | Media.kif 1108-1108 | Transparency 是 PrintedSheet 的 subclass |
(subclass OHPTransparency Transparency) | Media.kif 1117-1117 | OHPTransparency 是 Transparency 的 subclass |
(subclass ProjectionSlide Transparency) | Media.kif 1122-1122 | ProjectionSlide 是 Transparency 的 subclass |