hand drawing
hand painting
free-hand sketch
manual drawing
例句：
By the introduction of the history,characteristics,displaying ways and the technology of silk hand drawing,the paper tells about the beauty of silk hand drawing.
通过对丝绸手绘的历史、特点、表现技法、工艺技术等几方面的探索 ,阐述了丝绸手绘所具有魅力。
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