Of course, the question was followed by a flurry of responses suggesting creating a base set of images of each slide in the deck, and then using an image comparison tool to identify changes.
当然，这个问题引来了一大堆的回复，比如建议他创建每个幻灯片的图像库，然后用图像比较工具来判断变化。
2
Slide indicator to base of the numbered scale.
将指针移到刻度底部。
3
Slidebase firmly across cover until it clicks into place.