This is the 16629th most frequent Polish word.
wrzucają
"Throw in" or "are putting in."
In this usage, 'wrzucają' metaphorically refers to sharing or contributing something to a space, like an online forum.
Ludzie wrzucają swoje opinie na forum.
People are posting their opinions on the forum.
In this sentence, 'wrzucają' is used to describe the action performed by the children, indicating they are physically putting or throwing stones into the river.
Dzieci wrzucają kamienie do rzeki.
The children are throwing stones into the river.
Here, 'wrzucają' signifies placing an item into another container, emphasizing ease or casual action.