To do a drawing for a painting most often means doing something very sketchy and schematic and then later making it polished.

To do a drawing for a painting most often means doing something very sketchy and schematic and then later making it polished.

为一幅画画画通常意味着做一些非常粗略和示意图，然后使它抛光。

-- Jasper Johns 贾斯培·琼斯