This is the 3689th most frequent Korean word.
사람만
"Only people" or "people only."
In this sentence, '사람만' emphasizes that only people, excluding other entities or objects, are allowed to enter the room.
이 방에는 사람만 들어올 수 있습니다.
Only people can enter this room.
Here, '사람만' is used to suggest exclusivity in action, stating a belief about people being sole actors of a behavior.
사람만 그런 행동을 할 수 있다고 생각하는 것은 잘못입니다.
It is incorrect to think that only people can behave that way.
In this case, '사람만을' underlines the exclusivity in trust directed towards people, showing a deliberate limitation toward trusting only humans.