in which的使用方法

a new video series in which alumni founders share their entrepreneurialjourney 

你好，请问如何理解这里的in which的使用方法呢?

假如可以的话，期望可以得到in which的使用方法讲解，实在理解不了。

Introducing CBS Startup Stories, anew video series in which alumni founders share their entrepreneurial journey,from CBS to where they are today.  CBS是columbia bisunessschool.

从提问看得出，网友非常狭隘地理解了 in which 的意思。这是 in which 引导的正宗的定语从句，如何会理解不了。以下两个例句都含有in which，网友可能感觉第一句非常不错理解，第二句难道就理解不了？请看：

This is the roomin which we will hold a meeting.

He told us a storyin which he had met a monster.

第二句跟网友的句子是一个种类，仔细琢磨和对比。