abstraction number

例句：

1. 1. The teacher asked us to count the abstraction number of the students in our class.
   老师要求我们数出班上学生人数的抽象数。
2. 2.In mathematics, we often use abstraction numbers to represent quantities without actually counting them.
   在数学中，我们经常使用抽象数来表示数量，而不必实际计数。
3. 3.The student was asked to calculate the abstraction number of the squares of the angles in a triangle.
   学生被要求计算三角形内角平方的抽象数。