숨소리를

breathing

→ 숨소리
phrase Rare #21,134
breathing 숨소리 means “the sound of breathing,” and 를 marks it as the object of the verb. It is often translated naturally as “breathing” or “breath sounds.”
KO: 조용히 숨소리를 들었어요.
EN: I quietly listened to the sound of breathing.

심장이 아니라 숨소리를 들어요

Not my heartbeat—listen to my breathing.

— 헤어질 결심 (2022)

당신 숨소리를 들었어요

I heard you breathing.

— 잉글리쉬 페이션트 (1996)