单词：major in
主修, 专攻
major in的用法和样例：
例句
- He majors in Russian literature.他主修俄罗斯文学。
- English is his major and history is his minor.他主修英文，副修历史。
- Many students specialize in engineering.许多学生专攻工程学。
- I'm majoring in business administration in college.在大学里我专攻商业管理。
- 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。
- Mike specializes in the history of fashion at the university.迈克在大学里专修时装史。