以 Seedream 4.5 / 5.0 製作的復古風詳細粉筆畫，描繪黑板上的人體心臟，並標示各個部位與瓣膜

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一幅精細的復古風格黑板插畫，說明人體心臟的解剖構造。畫作應以白色和彩色粉筆，採用寫實的科學風格繪製。心臟的所有不同部位（心室、心房、瓣膜）都應以優雅的草寫字體清楚標示。黑板的質感和粉筆灰應清晰可見，展現豐富且知識性十足的繪製能力。 –ar 4:3

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