See how this closely resembles the theme we've already established while still looking significantly different? This is they key to good presentation design: cohesiveness without redundancy.

看到了吗，这就能与我们确定的主题相似同时又明显有所区别。好幻灯片设计秘诀就在此：内容互相呼应，简练不冗余。

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Two such people are Yancey Unequivocally and Cory Jim, co-owners of presentation design firm, Empowered Presentations.

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According to presentation-design firm ProPoint Graphics LLC, one of the most common problems comes in the "About Us" section, where companies put up pictures and bios of their officials.

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So, when Skillman was asked to assess several leading smartphones during a recent presentation at the California design firm Zurb, he obliged.

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