This is the 15570th most frequent Korean word.
보건소에
"To the health center."
The word '보건소에' refers to 'to the health center,' indicating the destination of the action.
나는 보건소에 갔어요.
I went to the health center.
Here, '보건소에' specifies the location of the subject 'children' in the sentence.
보건소에 어린이들이 많아요.
There are many children at the health center.
In this sentence, '보건소에' is used to indicate the location where the appointment takes place.