(~s)
A ~ 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.
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(~s)
A ~ 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.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012