Of course, first, I majored in English in university.
当然可以。首先，我在大学学习的是英语专业。
I know nothing of advanced mathematics, which was offered as an optional course when I majored in Chinese at Harvard University.
我在哈佛大学主修汉语时，高等数学仅仅是一门选修课，所以我根本不懂高等数学。
Oilfield subsurface geology is the key specialized course for the students majored in geological engineering and exploration of mineral resources program.
“油矿地质学”是石油类高等院校地质工程及资源勘查工程专业的核心专业课。
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