This is the 7452nd most frequent Polish word.
kontrolerzy
Controllers.
In this sentence, 'kontrolerzy' refers to ticket inspectors or controllers responsible for ensuring passengers have valid tickets.
Kontrolerzy sprawdzali bilety w pociągu.
Controllers were checking tickets on the train.
Here, 'kontrolerzy' specifically refers to individuals managing and supervising air traffic operations to ensure safety.
Kontrolerzy ruchu lotniczego mają bardzo wymagającą pracę.
Air traffic controllers have a very demanding job.
In this context, 'kontrolerzy' are quality inspectors or supervisors ensuring manufacturing standards.