guiding the dead on their return journey to the other world这里的on 是什么用法,是一种固定语法吗

问题描述:

guiding the dead on their return journey to the other world
这里的on 是什么用法,
是一种固定语法吗

on one's way(journey)
习惯了就这么用

on their return journey to

on their return journey to
on one's way to
参照这个固定的搭配