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Keywords: colorful, colorful, rainbow, gradient PowerPoint background template, art design, abstract PPT background picture download
Brief introduction: Bachelor student cartoon character with graduati...
Introduction: Thesis defense ppt template, topic background and mean...
Introduction: dark gray background, a cartoon title book cover, note...
Brief introduction: Zhejiang University School Logo, Zhejiang Univer...
Brief introduction: light gray low triangle background, pills, capsu...
Description: Business desk big picture background cover, yellow blac...