optional subject
US /ˈɒpʃənəl ˈsʌbdʒɪkt/
UK /ˈɒpʃənəl ˈsʌbdʒɪkt/
名詞
選修科目, 選修課
a subject that a student can choose to study, as opposed to a compulsory subject
範例:
•
In high school, art was an optional subject for me.
在高中，美術是我的選修科目。
•
Students must choose at least two optional subjects.
學生必須選擇至少兩門選修科目。