average gross sales

例句：

1. 1. The average temperature in New York is 50 degrees Fahrenheit.
   纽约的平均温度是华氏50度。
2. 2.The company's average annual revenue has increased by 20% over the past five years.
   该公司过去五年的平均年收入增加了20%。
3. 3.The average life expectancy of a person in their thirties is around 75 years.
   一个三十岁的人的平均预期寿命约为75岁。