This is the 14378th most frequent Korean word.
무렵에
"무렵에" means "around the time of" or "approximately at the time when."
Here, '무렵에' is used to indicate 'around the time when,' denoting approximately the time the sun sets.
해가 질 무렵에 집에 도착할 것 같아요.
I think I will arrive home around the time the sun sets.
In this sentence, '무렵에' refers to 'around the time,' specifying the approximate time when he left.
그가 떠난 무렵에 비가 오기 시작했어요.
Rain began to fall around the time he left.
The word '무렵에' here is used to convey 'around the time,' indicating the approximate timing of spring's approach.