adj.选举的；随意选择的
n.[美]选修科目
He had never held elective office. 他从未担任过任何选举产生的职务。
Elective surgery must be carefully investigated. 选择性手术必须小心评估研究。
Besides the required courses, I'm taking an elective in computer. 除了必修课外，我正在选修电脑课。
