water under the bridge片語KK [ˋwɔtɚ ˋʌndɚ ðə brɪdʒ] /ˈwɔtɚ ˈʌndɚ ðə bɹɪdʒ/發音片語1過去的事、往事、已成定局的事口語We argued a lot back then, but that's all water under the bridge now.我們當年常吵架，不過那都是過去的事了。