This is the 12824th most frequent Russian word.
культурная
"Культурная" means "cultural" in English.
In this sentence, 'культурная' is used as an adjective modifying 'жизнь' (life), indicating that life is related to culture, such as art, music, and traditions.
Культурная жизнь в городе очень разнообразна.
The cultural life in the city is very diverse.
Here, 'культурной' describes a person's mannerisms and behavior, referring to her as well-mannered and refined.
Она всегда была очень культурной и уважительной.
She has always been very cultured and respectful.
In this example, 'культурные' (cultural) describes 'мероприятия' (events), implying events related to arts, traditions, or cultural exhibitions.