whereby

英 /weəˈbaɪ/ 　美 /werˈbaɪ/

We have an arrangement whereby we share the cooking.

我们有个安排，轮流负责做饭。

Schools could introduce a system whereby older students provide academic support to younger pupils after lessons.

学校可以引入一种制度，让高年级学生在课后为低年级学生提供学业帮助。

搭配

a system whereby 借以实现某事的制度a process whereby 借以实现某事的过程an arrangement whereby 据此实行的安排

正式关系副词，常接在system等词后，相当于by which。