elective

选举的,随意选择的英释中释adjan elective position or organization is one for which there is an election

1 elective course,选修课

2 an elective course,选修科目

3 elective system,n. 选课制度，选修制

4 elective subjects,选修科目（elective subject的复数）

5 elective surgery,选择性外科手术；非急需施行的手术

1 the 34 elective seats in the National Assembly.国民议会中的34个选举席位