句子：The point used by Clovis people differs slightly from later points, in the way that the base of the stone is thinned, uh, it’s thinner toward the base, the part that’s attached to the spear. (point 指矛尖)

请问老师：in the way that怎么理解？是in that 里加了 the way 然后引导原因状语从句吗？另外句中的 it 指的是句末的 the part that’s attached to the spear 吗？