Thin lines are used to draw the outlines of superposition cuts. When it overlaps the outlines of the view, the outlines must be drawn completely.是什么意思_Thin lines are used to draw the outlines of superposition cuts. When it overlaps the outlines of the view, the outlines must be drawn completely.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句