She majored in maths and physics at university.

她在大学里主修数学和物理。

Are you majoring in English Literature?

你是在专修英国文学吗?

He majored in International Politics at Harvard University.

他在哈佛大学主修国际政治。

In college I majored in natural science. What was your major?

上大学时我主修自然科学,你当时学什么专业?

Brian majored in economics.

布莱恩主修经济学。