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What should I do if something goes wrong at a critical moment and the PPT courseware cannot be opened?

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light and shadow synthesis

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Intensive Reading Courseware for Foreign Journals: Tribute to Yuan Longping

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Courseware Tutorial | Super Animation in PPT — Zooming and Positioning

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Courseware Tutorial | The switching animation in PPT can still be played like this!

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Master is not a template? A powerful tool for PPT courseware interface design

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