This is the 11715th most frequent Polish word.
koncentrowali
"Koncentrowali" means "they concentrated" or "they focused."
This sentence uses 'koncentrowali się' as a reflexive verb indicating the action of focusing intently on completing a task.
Uczniowie koncentrowali się na rozwiązaniu trudnych zadań matematycznych.
The students were concentrating on solving difficult math problems.
Here, 'koncentrowali' describes the intentional direction of effort or focus towards a specific topic, modifying 'badania' (research).
Naukowcy koncentrowali swoje badania na wpływie zmian klimatycznych na ekosystemy.
The scientists concentrated their research on the impact of climate change on ecosystems.
In this context, 'koncentrowali' indicates the directed effort to focus a discussion on particular issues or topics.