major³ v major in sth phr v [T] AmE to study something as your main subject at a college or university 【美】 〔在大学〕主修〔某科目〕: I'm majoring in biology. 我主修生物。
major in sth AmE to study something as your main subject at a college or university 【美】 〔在大学〕主修〔某科目〕: I'm majoring in biology. 我主修生物。