bobrów

In a sentence

• Widziałem wiele śladów bobrów przy rzece.

  I saw many traces of beavers by the river.

  Here, 'bobrów' is the genitive plural form of 'bóbr', meaning 'of beavers', indicating possession or presence of traces left by beavers.

• Podczas natłoku zdarzeń udało mu się zachować spokój jak bobrów.

  During the rush of events, he managed to stay calm like beavers.

  In this case, 'bobrów' is used metaphorically to compare calm behavior to the activity or perceived calmness of beavers.

• Uczniowie projektowali tamy bobrów.

  The students were designing beaver dams.

  Here, 'bobrów' is part of a noun phrase 'tamy bobrów', meaning 'beaver dams', with 'bobrów' being the genitive plural form indicating ownership of the dams.