Англо-русский словарь Мюллера
improve upon улучшать, усовершенствовать Tom has never improved upon hisfirst book, which had a wild success; none of the others are as good.
«improve upon»
improve upon в энциклопедиях
improve upon в энциклопедиях
improve upon улучшать, усовершенствовать Tom has never improved upon hisfirst book, which had a wild success; none of the others are as good.