in out-of-school hours; extracurricular; out-of-school ( attr. )
внеклассное чтение — reading in out-of-school hours, home reading
внеклассные занятия — out-of-school activities
in out-of-school hours; extracurricular; out-of-school ( attr. )
внеклассное чтение — reading in out-of-school hours, home reading
внеклассные занятия — out-of-school activities
Смирнитский. Русско-английский словарь сокращений Смирнитского. Russian-English Smirnitsky abbreviations dictionary. 2012