miles away
心不在焉，全神貫注于其他事物
口語·表示心不在焉或走神
英文釋義
deeply lost in thought or daydreaming; not mentally present or paying attention
例句
Sorry, I was miles away—what did you say?
典故來源
字面指距離很遠，比喻思維遠離當前場景，源于日常對話中形容走神。