He can use a computer drawing, no trace; Just one little click of the mouse to point, Instead of doing everything we can.
他可以用电脑画图了，不用描图；只要用一小小的鼠标点来点去，就可以代替人工所做的一切。
2
It does not require very much expertise in free hand drawing seeing that all you have to do is trace a still image.
它不需要非常放手看到所有您需要做的绘画专长是跟踪一个静态图像。
3
This paper presents a new method of drawing perspective shade and shadow in parallel rays, which makes use of plane trace and geometrical drawing method.