major in

• 主修； 专攻； 专修（某课程）

major in的用法和样例：

例句

1. He majors in Russian literature.
   他主修俄罗斯文学。
2. English is his major and history is his minor.
   他主修英文，副修历史。
3. Many students specialize in engineering.
   许多学生专攻工程学。
4. I'm majoring in business administration in college.
   在大学里我专攻商业管理。
5. I majored in English but now I major in French.
   我曾专修过英语，但现在我主修法语。
6. Mike specializes in the history of fashion at the university.
   迈克在大学里专修时装史。