C：我主修经济学。

C: My major is economics.

youdao

我主修经济学，副课是法语。

My major subject is Economics and my minor subject is French.

youdao

我想在大学里主修经济学。

I intend to major in economics in college.

youdao

That little semi-religious speech about modeling, I think economists, those of you who are Economics majors you're thinking, yeah, what's the problem?

有一条关于建模的准教训,对于经济学者,你们那些主修经济学的,应该经常问自己,出现什么问题了

耶鲁公开课 - 博弈论课程节选