originalen443 文字
A detailed, vintage-style chalkboard illustration explaining the anatomy of the human heart. The drawing should be done in a realistic, scientific style with white and colored chalk. All the different parts of the heart (ventricles, atriums, valves) should be clearly labeled with elegant, cursive handwriting. The texture of the chalkboard and the chalk dust should be visible, showcasing a rich, knowledge-based rendering capability. –ar 4:3