An ~ is someone who spends a lot of time working actively for environmental causes. (BRIT JOURNALISM)
N-COUNT
An ~ is someone who spends a lot of time working actively for environmental causes. (BRIT JOURNALISM)
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012