-Wiesler: You've done nothing, know nothing. So you think we just arrest innocent citizens on a whim?
arrest: 逮捕 innocent: 無罪的 citizen: 市民 on a whim: 心血來潮 whim: 一時的興致
什么都沒做?什么都不知道?你認為我們會隨便逮捕無辜民眾嗎?
——《竊聽風暴》

on a whim: 一時心血來潮

實例：

She bought that dress on a whim.她一時心血來潮就買了那件連衣裙。
　　
I bought the encyclopedia on a whim.我憑一時的興致買了這本百科全書。

You would never go beyond the requirements on a whim , or just because you thought it was cool .你不可以因為一時興起，或者僅僅是覺得很酷，就去超越需求。

He saw the deal on the Internet and booked the vacation on a whim.他在網上看到一個很劃算的價格，心血來潮，馬上定票，準備出去渡假。

He bought a lottery ticket on a whim and won the jackpot.他心血來潮買了張彩票，結果中了頭獎。

The coach changed the game plan on a whim and won the championship. 教練突發奇想，立即決定改變原定戰術，結果贏得了決賽勝利