They were rolling with laughter.

英 美
  • 他们笑得前仰后合。
  • laughter n.【U】笑;笑声
  • rolling adj.旋转的;摇晃的;波动的n.旋转;滚动动词roll的现在分词形式.
  • they pron.他们
  • were v.是,在,有(be动词的复数过去式)
  • with prep.用;随着;包括;和...一起