如果你适合的统计平均数，由20岁你会接触到至少2.0万个小时的电视。
If you fit the statistical averages, by the age of 20 you will have been exposed to at least 20,000 hours of television.
研究人员总是强调统计的平均数，然而临床医生强调的却是在人们身上实际发生了什么。
Researchers always focus on the statistical averages but clinicians focus on what is actually happening with individuals.
统计学家们把全年的数字累加起来算出平均数，其中包括假期和周末。
The statisticians took the average of the figures for the whole year including holidays and weekends.
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