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  "pic_intro" => "中国风 PPT模板 教学模板 通用模板 白绿色 简约风 传统文化 水墨风格 山水画 教育素材 古典元素 设计美学 淡雅风格 中国艺术 课程讲解"
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  "pic_upload_ymd" => "2025-11-20 16:00:02"
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  "pic_extension_des" => "PPTX"
  "pic_color_mode" => "rgb"
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]