在这幅画的其他部分，蒙德里安显然是用徒手画的，完全没有用纸条引导。

In other parts of the painting, Mondrian clearly painted freehand, with no paper to guide him.

youdao

在最后一张细节图上有很多值得注意的地方：在条带下面，你可以找到蒙德里安小心的在线条上收尾，改过他徒手水平画的痕迹。

There is a lot to see in this last detail: underneath the stripe, you can see where Mondrian carefully edged his brush up to the stripe, overlapping some horizontal marks he'd made freehand.

youdao

机械制图和建筑绘图课程是没有必要的，事实上，可能会比一般学科和徒手画类的有用。

Courses in mechanical drawing and architectural drawing are not necessary and, in fact, may be less useful than general academic subjects and freehand drawing classes.

youdao