어느새 5년이란 세월이 흘러갔구나 하는 느낌 속에는 그동안 제가 만났던 많은 어린이들의 모습이 함께 당겨 있습니다.
=> (lit.) In the feelings I get from realizing five long years have already passed before I knew it are the very faces of the many kids I have met during this time.
== Realizing that it's already been five long years just like that also brings in my mind the faces of the many kids I have met during this time.