optional subject
US /ˈɒpʃənəl ˈsʌbdʒɪkt/
UK /ˈɒpʃənəl ˈsʌbdʒɪkt/
名词
选修科目, 选修课
a subject that a student can choose to study, as opposed to a compulsory subject
示例:
•
In high school, art was an optional subject for me.
在高中，美术是我的选修科目。
•
Students must choose at least two optional subjects.
学生必须选择至少两门选修科目。