Plaster jacketing is an important process in the field of paleontology.

石膏护套是古生物学中 一个重要的过程。

And the reason for that is that we needed to get right on underneath the skeleton so that we could begin the process of plaster jacketing.

因为我们需要在整个骨架的下方，这样我们就可以开始做石膏护套了。