This is the 16199th most frequent Polish word.
unijnej
"Unijnej" means "of the union," typically referring to the European Union.
In this sentence, "unijnej" is used as an adjective modifying "komisji," indicating belonging to or being part of the European Union (EU).
Polityka unijnej komisji jest często dyskutowana.
The policy of the EU commission is often discussed.
Here, "unijnej" is an adjective describing "współpracy," again denoting its association with the European Union.
Efekty unijnej współpracy są widoczne.
The effects of the EU cooperation are visible.
In this example, "unijnej" modifies "regulacji," signifying that the regulation pertains to the EU policies or standards.