让听众关注你和你的话语，而非幻灯片。
Get the audience to focus on you and your words, not the slides.
正如我在所有幻灯片设计的文章里所说的，居中对齐应该是你的最后选择而非首选。
As I say in just about every design article I write, center alignment should be a last resort, not a first.
幻灯片在图表展示或视觉辅助方面十分好用，可以对重点起到补充作用。但很多人使幻灯片成了演讲的中心，而非演讲者本人和传递的信息。
It can be a useful tool for showing graphs or visual AIDS to complement important points, but too many people make it the focus of their presentations, in place of themselves and their actual message.
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