a heartbeat away
成語所屬單字heartbeat
a heartbeat away — 慣用語
1. extremely close to happening, becoming, or experiencing something, especially so
1.慣用語
釋義
近在咫尺；一步之遙
extremely close to happening, becoming, or experiencing something, especially something significant or dangerous
例句
With the election results so close, Caleb was only a heartbeat away from losing his seat on the council.
In the intensive care unit, the patient was a heartbeat away from needing emergency surgery.