zài / bǐ / jiào / bù / tóng / tóu / zī / fāng / àn / shí / fēn / xī / shī / jì / suàn / le / tiáo / hé / píng / jūn / shù

在比较不同投资方案时，分析师计算了调和平均数。

When comparing different investment plans, the analyst calculated the harmonic mean.