这个句子的语法不能理解
问题描述：
这个句子的语法不能理解
In this way they can obtain the necessary experiences required when they go job-hunting upon graduation.我不能理解的是when不是引导时间状语从句的吗,为什么when前面会是个动词.感觉required搁在这很奇怪.
答
In this way they can obtain the necessary experiences（that are) required when they go job-hunting upon graduation.that are required when they go job-hunting upon graduation这是完整的从句