Hum+Drum = HUMDRUM

Hum解作蜜蜂發的嗡嗡聲或以用鼻子哼唱的聲音

Drum解作鼓聲

但HUMDRUM兩種聲音拚在一起原來解作平凡的,乏味的；單調的,無聊的

E.g. They all appeared to be lost in this humdrum concert.

真意想不到, 大家查查字典吧!