洪水猛獸 [ㄏㄨㄥˊ ㄕㄨㄟˇ ㄇㄥˇ ㄕㄡˋ; hong2 shui3 meng3 shou4] lit. severe floods and fierce beasts (idiom) fig. great scourges extremely dangerous or threatening things ◄ ►