average yield的用法和樣例：
例句
- The official price index may understate the true average gain but figures for central Shanghai will overstate it.
官方價格指數也許低估真實的平均收益，而對於上海中心區的數據則有些高估了。 - This is their average yearly output.
這是他們每年的平均產量。 - The rice crop this year is 15 percent above the average.
今年的稻米產量高於往年平均產量的百分之十五。
