drive one's pigs to market并不是赶猪去市场，而是打鼾。

【例句】
Last night I heard him driving his pigs to market.
昨天晚上，我听见他鼾声如雷。

I can't get any sleep with Will driving his pigsto market every night-- think it's time for him tosee a doctor about his snoring.
威尔每天晚上都打鼾，我睡不着一我觉得他该去看医生治治他的鼾声了。