it will (all) come out in the wash
US /ɪt wɪl ɔl kʌm aʊt ɪn ðə wɑʃ/
UK /ɪt wɪl ɔl kʌm aʊt ɪn ðə wɑʃ/

1.
一切都會水落石出, 最終會解決
said to mean that a problem or difficulty will eventually be resolved or become clear, so there is no need to worry now
:
•
Don't worry about the misunderstanding; it will all come out in the wash.
別擔心誤會;一切都會水落石出。
•
I'm not sure how we'll solve this problem, but I'm sure it will all come out in the wash.
我不確定我們如何解決這個問題,但我相信一切都會水落石出。