He lolled at his ease, humming, not unmelodiously, snatches of a rude song, and fingering a pack of cards.

他懒洋洋地靠在那里，嘴里哼着一支不怎么悦耳的粗鲁的歌，手里拿着一副纸牌。

youdao

Once a male is settled, he's introduced to a female, and soon digs himself in to start humming his love song by vibrating his swim bladder—about a hundred times a second.

雄鱼一旦安顿下来，研究者会向它介绍雌鱼，它很快把自己埋入沙中，以大约每秒一百次的频率，振动自己的鱼鳔，借此来演唱情歌。

youdao

Once he mastered the song, he kept humming it, and his jokes, not really jokes, were more like taunts.

NEWYORKER: Mr. Bones

Khil became aware of the song's viral success after hearing his grandson humming the tune, according to Know Your Meme.

CNN: Viral Web's 'Mr. Trololo' dies at 77