pen n trace 记录笔迹
If you bring a road map for each child, they can trace your trip in pen or crayon and draw landmarks on the map themselves.
如果你给每个孩子带一张路线图,他们可以用钢笔或蜡笔记录你的旅程,并在地图上自己画路标。
Use the Pen Tool to trace that part as illustrated in the image below.
像下图演示的那样,使用钢笔工具描绘这一部分。
Time to do the Disk Tray, trace its shape using the Pen Tool as illustrated in the image below.
现在是时候制作光盘托盘了,参照下图使用钢笔工具描绘其形状。
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