on the spur of the moment
一時(shí)沖動地;即時(shí)地,毫無準(zhǔn)備地
口語·形容一時(shí)沖動
英文釋義
doing something without planning or thinking ahead; spontaneously
例句
We decided to go on a road trip on the spur of the moment.
典故來源
源自16世紀(jì)騎馬文化,指用馬刺突然刺馬加速,后比喻未經(jīng)計(jì)劃的沖動行為。