elective

選修的多用於美式

She took three elective courses outside her own department.

她在本系以外修了三門選修課。

選舉產生的、經選舉的

He held elective office for nearly twenty years.

他擔任民選公職將近二十年。

選擇性的、非緊急的醫學

All elective surgery was postponed during the outbreak.

疫情期間所有非緊急手術都延後了。

非強制的、可自行選擇的

Attendance at the workshop is elective, not required.

參加這場工作坊是自由選擇，並非強制。

選修課、選修科目多用於美式

I chose photography as my elective this semester.

這學期我選了攝影當選修課。