be in the hole造句

• Something must be in the hole when we move the equipment onto the top of the " hole , " and that " something " must not be there , or must gradually disappear , during the lowering process
  当我们要将设备移动到“洞”的上部时，洞里必须有些“东西” ；同时，在将设备降到洞里的过程中，洞里不能有“东西” ，或这种“东西”必须逐渐地消失。