Definition: to study something as your main subject in college or a university Level: B2
在大学时，我主修计算机科学。
At university, I ___majored ___in computer science.
我妹妹计划主修心理学。
My sister plans to ___major ___in psychology.
如果你主修商科，将会有很多职业选择。
If you ___major ___in business, you'll have many career options.
