refresher course
n.复习课程,进修课程
难易程度:
refresher course为短语/超纲词汇
refresher course
course of instruction for egteachers to learn about new techniques and developmentsin their field 进修课程（如为教师等设的业务知识更新课）.
refresher course
n[C]
a training course, usually a short one, that teaches you about new developments in a particular subject or skill, especially one that you need for your job
a training course, usually a short one, that teaches you about new developments in a particular subject or skill, especially one that you need for your job
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