refresher course
柯林斯詞典
1. N-COUNT A refresher course is a training course in which people improve their knowledge or skills and learn about new developments that are related to the job that they do. 進(jìn)修課程
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1. N-COUNT A refresher course is a training course in which people improve their knowledge or skills and learn about new developments that are related to the job that they do. 進(jìn)修課程