商务会议插图与舞台上的演讲者和观众卡通人物科学演示学术研讨会专业简报/Business conference illustration with speaker on stage and audience cartoon characters Scientific presentation academic symposium professional briefing

素材名称：商务会议插图与舞台上的演讲者和观众卡通人物科学演示学术研讨会专业简报

英文名称：Business conference illustration with speaker on stage and audience cartoon characters Scientific presentation academic symposium professional briefing

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