This is the 19595th most frequent Korean word.
어린이라면
"If (someone is) a child."
어린이라면 in this sentence sets a hypothetical condition, implying 'if someone is a child.'
어린이라면 누구나 동화책을 좋아할 거예요.
If you are a child, you will like fairy tale books.
어린이라면 suggests a general condition attributed to children, linking the idea of playing to the concept of childhood.
어린이라면 학교에서 충분히 재미있게 놀 수 있어야 합니다.
If you are a child, you should be able to play cheerfully at school.
어린이라면 here again implies characteristic tendencies of children when exposed to play activities.