By the seat of one's pants
憑借直覺或本能行事，而非依靠計(jì)劃或經(jīng)驗(yàn)。
用于描述緊急或缺乏準(zhǔn)備時(shí)的即興應(yīng)對(duì)。
英文釋義
To do something without advance preparation.
例句
He flew the plane by the seat of his pants during the storm.
典故來源
源自早期航空術(shù)語，飛行員靠身體感受飛機(jī)震動(dòng)來判斷飛行狀態(tài)，而非儀表。