walk out on

in a heartbeat : 생각해 볼것도 없이 당장very quicklywithout thinking about itimmediatelyex. When I have an emergency, he responds in a heartbeat.제가 비상사태일때, 그는 즉각 대답하죠.It was difficult at times but rewarding as well so I'd do it again in a heartbeat.그건 때때로 어려웠지만, 엄청난 보람을 주기도 했습니다. 때문에 전 고민없디 그것을 다시 할 겁니다.If I could go back and take back what I've done, I wouldn't do it in a heartbeat.만약 제가 과거로 돌아가서 했던 일을 다..