They were related but not as closely.

VOA: special.2009.07.24

Yes, cyanide and death, very closely related as well.

没错，氰化物与死亡，也有非常密切的联系。

麻省理工公开课 - 化学原理课程节选

so it was closely related where I built my Electrical Engineering as an undergrad and then went forward

我后来攻读的专业也和本科学的电气工程息息相关，

在学校的经验 - SpeakingMax英语口语达人

Closely related question.

非常相关的问题。

耶鲁公开课 - 死亡课程节选