base drawing

例句：

1. 1. The engineer drew a basedrawing of the new building before construction began.
   工程师在建筑开工前绘制了新建筑物的基本绘图。
2. 2. The architect used this basicdrawing to guide the construction team in theirwork.
   建筑师使用这个基本绘图来指导施工团队的工作。
3. 3. The student's basedrawing was excellent, but it needed somerevision for clarity.
   学生的初步绘图做得很好，但需要一些修改以提高清晰度。