This is the 2675th most frequent Polish word.
cenne
Valuable.
The word 'cenna' is used as an adjective describing the noun 'pomoc' (help), indicating that the help was of great value or importance.
Twoja pomoc była bardzo cenna.
Your help was very valuable.
'Cennych' is the plural genitive form of the adjective 'cenne,' used here to describe 'eksponatów' (exhibits), signifying that these items are precious or significant.
To muzeum ma wiele cennych eksponatów.
This museum has many valuable exhibits.
Here, 'cenne' is used as an adjective modifying the plural noun 'zasoby' (resources), emphasizing the worth and need for protection of these resources.