fish in troubled waters
趁混乱时期进行活动；趁乱捞取利益
书面或口语·批评投机行为
英文释义
To take advantage of a chaotic or tense situation for personal gain
例句
Some investors love to fish in troubled waters during a market crash.
典故来源
源自古代渔猎，比喻在混乱中趁机获利，类似“浑水摸鱼”。