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This is a great drawing by one of the 19th century's finest draughtsmen.這幅恢宏畫作出自一位19世紀(jì)最杰出的畫家之手。Draughtsmen make drawing on a drawing board, a pencil a T - square , set square and scale.繪圖員用鉛筆 、 丁字尺、三角板和比例尺在繪圖板上繪圖....