To sit up suddenly when hearing a visitor coming
- đang nằm nghe tiếng chân mẹ về ngỏm dậy: To sit up quickly from one's lying position on hearing one's home-coming mother's footsteps
- nghe như có cái vòi nước đang chảy: it sounds as if a tap were running
- đang nằm hoảng hốt chồm dậy: he was lying when he sprang up in bewilderment