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Use the solar system structure diagram to explain the market share of automobile models, and explain the Apple product system, the sun, the earth, and the cosmic starry sky, which can be used as a European and American classic ppt template for space science popularization.
Use the solar system structure diagram to explain the market share of automobile models, and explain the Apple product system, the sun, the earth, and the cosmic starry sky, which can be used as a European and American classic ppt template for space science popularization.