This will remove your completed lessons, quizzes, and assignments. You will start the course from the beginning.
13-0-1 指令位置
13-0-2 介面2大項:1.約束、2.平移/旋轉
13-0-3 先睹為快:移動/複製
13-0-4 先睹為快:約束(零件組裝零件)