覆水難收 [ㄈㄨˋ ㄕㄨㄟˇ ㄋㄢˊ ㄕㄡ; fu4 shui3 nan2 shou1] spilt water is difficult to retrieve (idiom) it's no use crying over spilt milk what's done is done and can't be reversed the damage is done once divorced, there's no reuniting ◄ ►