除了 “as happy as a pig in muck” 以外，也可以说 “like a pig in muck”，意思是一样的。 例句 Paul had started to hate his job, so he changed career path – now he’s as happy as a pig in muck. 保罗开始讨厌起自己的工作，所以他改变了职业道路。现在他特别开心 ...