number of turnovers of current capital

例句：

1. 1. The number of studentsin the class is 20.
   班上的学生有20个。
2. 2. Thenumber of cars on theroad has doubled since lastyear.
   路上的汽车数量从去年增加了一倍。
3. 3. The number of people who have signedup for the event is increasing daily.
   报名参加该活动的人数每天都在增加。