“选修”的反义词：必修。...

如有需要可选修额外的课程。Additional courses may be taken if desired.这门课程包括十个必修单元和五个选修单元。The course consists of ten core modules and five optional modules.某些课程是必修的，其他是选修的。Certain courses are compulsory, others are optional....

“选修”的拼音为：xuǎn xiū...

“选修”的英语可以翻译为：take as an elective course ...