elective
adjective formal uk/iˈlek.tɪv/ us/iˈlek.tɪv/
选举的;由选举产生的;可以选择的
voted for or chosen
an elective office 任职者需经选举产生的职位
elective surgery 非急需施行的手术
elective
noun [ C ] uk/iˈlek.tɪv/ us/iˈlek.tɪv/
选修课
a subject that someone can choose to study as part of a course
During the MBA you will choose ten to twelve electives from a large and varied portfolio. 在整个工商管理硕士学习阶段，你需要从大量不同的课程中选修10到12门。