This is the 1158th most frequent Korean word.
사이에서
"Among" or "between."
Indicates that the issue was discussed within the group of friends, thus referring to a scope or a collective environment.
이 문제는 친구들 사이에서 논의되었습니다.
This issue was discussed among friends.
Used here to show the demographic group (teenagers) in which the programs are known.
인기 있는 프로그램은 청소년들 사이에서 널리 알려져 있습니다.
Popular programs are widely known among teenagers.
Implies achieving trust within a group of peers or colleagues.