He is drawing a line on the paper with a color pencil.

他正用一支色笔在纸上画线。

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Ing on top of the line drawing and defining shapes only with value.

我们现在是在描画的线条和一些有用的图形上绘制。

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Ing on top of the line drawing and defining shapes only with value.

我们现在是在描画的线条和一些有用的图形上绘制。

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