1. Since the designer typically lacks the expertise to use the CAD system the communication between the designers and draftsperson is typically through rough sketches and verball instructions.
由于设计师通常缺乏专业知识，于是同CAD系统间的交流，设计师和绘图师通常是通过粗略的草图和口头表达传递想法。
noun
1. a skilled worker who draws plans of buildings or machines
Synonym: draftsman draughtsman