This is the 4121st most frequent Polish word.
białoruskie
"Białoruskie" means "Belarusian" in English.
Here, 'białoruskie' is used as an adjective describing 'krajobrazy' (landscapes), indicating that these landscapes are related to Belarus.
Białoruskie krajobrazy są malownicze.
Belarusian landscapes are picturesque.
In this sentence, 'białoruskie' specifies the type of 'pieśni ludowe' (folk songs), denoting that they originate from Belarus.
Moja przyjaciółka uwielbia białoruskie pieśni ludowe.
My friend loves Belarusian folk songs.
Here, 'białoruskie' qualifies 'produkty' (products), suggesting that these products are made in or associated with Belarus.