number of image elements

例句：

1. 1.The number of students in the class is 30.
   班上的学生有30个。
2. 2. The number of stars in the sky is infinite.
   天空中的星星数量是无限的。
3. 3.The number of employees in the company has increased by 10%.
   公司的员工数量增加了10%。