黑板粉筆太陽系示意畫

A 3:2 horizontal classroom chalkboard illustration of the solar system. Draw the Sun and distinct planets with pastel chalk, curved orbit lines and tiny stars on dark green board. Rich powdery edges, coherent scale cues, friendly hand-drawn educational style. No labels, letters, numbers, dragon, mecha, logo or watermark.

在深綠黑板上以彩色粉筆繪製橫幅 3:2 的太陽系課堂示意畫。太陽與外觀不同的行星、弧形軌道和細小星點構成清楚的整體，粉筆顆粒邊緣豐富並保留手繪感。不加標籤、字母、數字、機甲龍、商標或水印。