He can upload multiple files and switch between the files during his presentation.
他可以上传多个文件并在演示期间在这些文件之间切换。
To see presentation changes, switch the outline pane to show slide miniatures.
若要查看演示文稿的更改情况，请切换到大纲窗格放映幻灯片缩图。
To see presentation changes, switch the outline pane to show slide miniatures.
若要查看演示文稿的更改情况，请切换到大纲窗格放映幻灯片缩图。
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