打ㄉㄚˇdǎ落ㄌㄨㄛˋluò水ㄕㄨㄟˇshuǐ狗ㄍㄡˇgǒu

  1. 趁他人失敗或危難時再加以打擊。參見「落井下石」條。

英lit. to beat a drowning dog (idiom)​, fig. to pulverize an (already defeated)​ enemy, to hit sb when he's down