numbering in daily series

例句：

1. 1.The numbers on the ballots are in order.
   选票上的号码是有序的。
2. 2.We need to number the plates for the new car.
   我们需要给新车的车牌编号。
3. 3.The teacher asked us to number the books by color.
   老师要求我们按颜色给书编号。