他边洗边用口哨吹着小曲。As he washed he whistled a tune.他低声哼着一支熟悉的小曲。He was humming a familiar tune.这是一首极为伤感的浪漫小曲.This is a romantic ballad that is pure corn....

“小曲”的英语可以翻译为：ditty，[化] smaller lumped koji，bagatelle ...