统计中已有确定中位数、四分位数、十分位数等的方法，文章在此基础上提出三分位数的概念及其确定的方法。
There already exist Median, Quartiles and Tenth quantile etc. Based on this, the authors put out the concept and (calculation) method for tri-sectional quantiles in this article.
在非洲广播节目只需花费三分钱就能获得一位听众。
Radio programmes can cost as little as three cents to reach a listener in Africa.
索尼的18万名全职员工中有三分之一位于日本。
A third of Sony's 180,000 full-time employees are based in Japan.
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