English version

refresher course in Training topic

From Longman Dictionary of Contemporary Englishrefresher coursereˈfresher ˌcourse (also refresher /rɪˈfreʃə $ -ər/) noun [countable]  SETa 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
Examples from the Corpus
refresher courseIn numerous training sessions, more than 50,000 people have had a refresher course on their community.Or just need a refresher course on what goes into one?For trainers or practising professionals needing a refresher course.She had been on a refresher course.a nursing refresher courseFrom now on all aircrew went through either a full conversion course or a short refresher course.