(~s)
A ~ is a test carried out by police in which a driver blows into a piece of equipment to show how much alcohol he or she has drunk.
Police will conduct random ~s.
N-COUNT
(~s)
A ~ is a test carried out by police in which a driver blows into a piece of equipment to show how much alcohol he or she has drunk.
Police will conduct random ~s.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012