Caffeine is a chemical substance found in coffee, tea, and cocoa, which affects your brain and body and makes you more active.
N-UNCOUNT
Caffeine is a chemical substance found in coffee, tea, and cocoa, which affects your brain and body and makes you more active.
N-UNCOUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012