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1·The average of 4, 5 and 9 is 6.

4、5、9三个数的平均数是6。《牛津词典》

2·The average life expectancy was 40.

平均期望寿命曾是40岁。《柯林斯英汉双解大词典》

3·The average age range is between 35 and 55.

平均年龄范围是35至55岁。《柯林斯英汉双解大词典》

4·The average price of goods rose by just 2.2%.

商品的平均价格仅上涨了2.2%。《柯林斯英汉双解大词典》

5·The average coal seam here is three feet thick.

这里的煤层平均为3英尺厚。《柯林斯英汉双解大词典》

6·What is the average annual snowfall for this state?

这个国家的年平均降雪量是多少？《牛津词典》

7·The average Los Angeles commute is over 60 miles a day.

洛杉矶平均通勤路程每天超过60英里。《柯林斯英汉双解大词典》

8·The average response time to emergency calls was 9 minutes.

紧急求助电话的平均回应时间是9分钟。《牛津词典》

9·The average length of a woman's menstrual cycle is 28 days.

妇女的平均月经周期是28天。《牛津词典》

10·The average sell-through rate for these magazines is 35-38%.

这些杂志的平均零售比率为35%至38%。《牛津词典》