on the fly
即興進行的;不經準備的
口語·描述即興或快速處理
英文釋義
doing something quickly or on the spot, without much preparation or planning
例句
We didn't have time to plan the party; we just organized it on the fly.
典故來源
源自棒球術語,指接住飛行的球,后引申為在過程中快速應對或即興完成。