求翻译：本文从公益广告的的设计出发论述公益性广告招贴的作用。图形、色彩和文字作为招贴设计的三大要素，他们之间的组合直接影响着招贴设计的传达效果。同时研究发现，在这三个的组成要素中：“人们在最初20秒钟里的色彩感觉占80％，形体感觉占20％。”由此可见，在招贴设计中，色彩是一种先声夺人的传达要素。就远程效果而言，色彩可以直接传递出非文字或图形所具有的信息功能，是最重要的视觉构成要素之一。是什么意思？

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