If you describe something as ~, you mean that people do not realize it or are not aware of it.
A surprising number of ailments are caused by ~ environmental factors...
ADJ: usu ADJ n
If you describe something as ~, you mean that people do not realize it or are not aware of it.
A surprising number of ailments are caused by ~ environmental factors...
ADJ: usu ADJ n
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012