draftsmanship

例句：

1. 1. The artist's sketches are a testamentto his skill.
   艺术家的草图证明了他的技艺。
2. 2. The engineer made a detailed draftof the new building before construction began.
   工程师在建筑开工前详细绘制了新建筑的蓝图。
3. 3. The designer used a combinationof sketches and diagrams to illustratetheir ideas.
   设计师结合草图和图表来阐述他们的想法。