He regards such matter with complete unconcern.

他对这种事情不关心。

Scott seemed unconcerned by his companion's problem.

斯科特对同伴困难似乎不关心。

He is callous about the safety of his workers.

他对他安全不关心。

Elaine didn't give a fig for Joe's comfort or his state of mind.

伊莱恩不关心乔痛痒和他状态。

It is quite indifferent to me whether you go or stay.

对你去留我不关心。

I am indifferent to their arguments.

我对他们争论不关心。