adj.無聊的；乏味的

Ho hum, ho hum. Oh, look, did the grass just grow another half-inch? Wonders! 姚恩：呵哈，呵哈。哦，你看，那些草是不是又長了半寸高？真是奇跡！

Hum the opening bars of your favourite tune. 哼一哼你喜愛的曲子的開頭幾個(gè)小節(jié)。

He could hear the hum of the bees in the garden. 他聽得見花園里蜜蜂的嗡嗡聲。

The only sound he heard was the hum of the machine. 他聽到的唯一的聲音就是那臺機(jī)器的嗡嗡聲。

ho hum 因?yàn)椴粐?yán)重