主修

Concentrators in geological sciences elect either geology or geography.

主修地质的生要选修地质或地理课程。

She majored in Maths and Physics at university.

她在里主修数和物理。

Mr. Stone spent his undergraduate days in Columbia University, majoring in economics.

斯通先生在哥度过了他四年的生活, 主修经济。

He is a history major.

他是主修历史的生。