elective

择期手术

Surgery that is scheduled in advance because it does not involve a medical emergency.

提前安排的非紧急医疗手术。

An optional course of study that a student can choose.

选举产生的职位

A public position for which the holder is chosen in an election.

通过选举产生任职者的公共职位。

An abortion that is chosen by the woman for non-medical reasons.