a roll

• - are you all right ? - you could lose a roll of pennies
  -你没事吧? -你可能在里面丢掉
• If i ' m lucky , i ' ll land on a rolls royce
  如果好运，我会摔在一辆劳斯来斯上。
• Which is going out with a camera and a roll of film
  那就是带著照相相机和一卷底片出去
• Let ' s go for a roll in the hay , it ' ll be fun !
  我们一起在干草垛里打滚吧，很好玩的！
• Are you all right ? - you could lose a roll of pennies
  -你没事吧? -你可能在里面丢掉
• Friction causes a rolling ball to stop finally
  摩擦力使得一只滚动的球最终停了下来。
• Survey on the occupational damage in a rolling mill
  现代大型水泥企业职业卫生现状调查
• To take a resource offline and perform a rolling upgrade
  将资源脱机，并执行滚动升级
• What are you talking about ? man , we ' re on a roll
  你在说什么?你快赚大钱了
• I want to buy a roll of film for my camera
  我想要替我的照相机买一卷底片