This is the 16933rd most frequent Polish word.
wypuszczali
"They were releasing" or "They let out."
Here, "wypuszczali" conveys the action of physically letting go of balloons into the air.
W parku wypuszczali balony na cześć święta.
In the park, they released balloons in honor of the celebration.
In this context, "wypuszczali" describes the act of letting animals go to graze.
Codziennie wypuszczali krowy na zieloną łąkę.
Every day, they let the cows out onto the green meadow.
Here, "wypuszczali" refers to the act of making new songs publicly available.