投影片比例：更新與傳承
4:3 4:3 1.85:1
16:9 1.85:1 16:9 1.85:1 Standard American Wide Screen 4:3 2:35:1
2.35:11.85:116:91.85:1 LibreOffice
投影片比例：更新與傳承
投影片比例：更新與傳承
投影片比例：更新與傳承 投影片比例：更新與傳承
投影片比例：更新與傳承
投影片比例：更新與傳承
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